| Jonava Senamiestis Gymnasium | |
| Native Name: | Jonavos Senamiesčio gimnazija |
| Streetaddress: | 76 Kaunas Str. |
| City: | Jonava |
| Postalcode: | LT-55178 |
| Country: | Lithuania |
| Motto: | Latin: Docendo discimus |
| Motto Translation: | By teaching, we learn |
| Coordinates: | 55.0703°N 24.2675°W |
| Type: | Public, grades 9–12 |
| Colours: | White Red |
| School Code: | 190302622 |
| Language: | Lithuanian |
| Principal: | Darius Mockus |
| Students: | 816 |
| Employees: | 65 |
| Url: | http://www.senamiescio-g.lt |
Jonavos Senamiesčio gimnazija (English: Jonava Senamiestis Gymnasium) is a public gymnasium in Jonava, Lithuania. It was founded in 1998 and includes grades 9–12. Its institution code is 190302622.[1] The gymnasium's anthem was changed several times because of politic structure changes in Lithuania. The current anthem was recognized in 2001.[2]