Marijampolė Rygiškių Jonas Gymnasium is a secondary school in Marijampolė, Lithuania. It is named after Rygiškių Jonas, one of the pen names of linguist Jonas Jablonskis who was one of the gymnasium's alumni. Established in 1867, the gymnasium was a significant cultural center of Suvalkija and educated many prominent figures of the Lithuanian National Revival. Since 2010, it is a four-year school.

Marijampolė is the capital of the Marijampolė County in the south of Lithuania, bordering Poland and Russian Kaliningrad Oblast, and Lake Vištytis. The city's population stood at approximately 48,700 in 2003. It is the cultural centre and largest settlement of the historical region of Suvalkija (Sudovia).