570- اعتراض ثالث  اعتراض ثالث از طرق فوق‌العاده شكايت از آراء مي‌باشد.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           

571- شرايط دعوي اعتراض ثالث: در صورتیکه رأی بین طرفین دادرسی مخل به حقوق شخص ثالث باشد و شخص ثالث يا نماينده او در مرحله دادرسي دخالت نداشته باشد می تواند اعتراض خود را به رأی صادره تحت عنوان اعتراض ثالث مطرح نماید.

572-  آراء صادره در دادگاه‌هاي عمومي و انقلاب و تجديدنظر و حكم داور در موارديكه ثالث در تعيين داور شركت نداشته است قابل اعتراض توسط شخص ثالث است.

573-  چنانچه شخصي در دعوايي جلب شده باشد نمي‌تواند به رأي صادره اعتراض ثالث نمايد چون ثالث محسوب نمي‌شود.

574-  اعتراض ثالث بايد به دادگاهي تقديم شود كه رأي قطعي معترض عنه را صادر كرده است

575-  چنانچه نسبت به حكم بدوي درخواست تجديد نظر شده باشد ، اعتراض ثالث در دادگاه بدوي مسموع نمي‌باشد و ثالث بايد در دعواي تجديد نظر وارد شود.

576-  اعتراض ثالث بر دو قسم است : 1- اصل 2- طاري

577-  اعتراض ثالث اصلي به حكمي كه از دادگاه عمومي صادر گردیده است و در آن دادگاه قطعیت یافته به همان دادگاه بدوی تقدیم می شود.

578- اعتراض ثالث اصلی نسبت به حکمی که در دادگاه بدوی صادر شده و در دادگاه تجديد نظر تأييد گرديده است در دادگاه تجديد نظر مطرح می شود.

579-  اعتراض ثالث فاقد مهلت يا ضرب الاجل مي‌باشد.

580- تقدیم دادخواست اعتراض ثالث مقيد به مهلت خاصي نيست ولی بايد در نظر داشت كه اعتراض قبل از اجراي حكم قابل طرح است و بعد از اجراي آن در صورتي مي‌توان مطرح نمود كه ثابت شود حقوقي كه اساس و مأخذ اعتراض مي‌باشد به جهتي از جهات قانوني ساقط نشده است.

581-  دادخواست اعتراض ثالث به طرفيت محكوم له و محكوم عليه حكم مورد اعتراض تقدیم دادگاه می شود.

582-  رسيدگي به اعتراض ثالث طاري نسبت به حكمي كه از دادگاه ديگر صادر شده بستگي به درجه دادگاه دارد.

583- اعتراض ثالث ظاری نسبت به حکمی که از دادگاه هم عرض صادر شده است بدون تقدیم دادخواست و در همان دادگاهی که دعوا در آن مطرح است به عمل می آید.

584-  اعتراض ثالث طاري نسبت به حکمی که از دادگاه بالاتر صادر شده است (درجه دادگاه پايين‌تر رسیدگی کننده به دعوی پایین تر از دادگاهي باشد که رأي معترض عنه را صادر كرده است)با تقدیم دادخواست به دادگاهي كه رأي معترض عنه را صادر كرده است به عمل می آید.