| Country: | San Marino |
| Sammarinese Reformist Socialist Party | |
| Native Name: | Partito Socialista Riformista Sammarinese |
| Colorcode: | red |
| Leader: | Simone Celli |
| Split: | Party of Socialists and Democrats |
| Merged: | Socialist Party |
| Foundation: | 1 May 2009 |
| Dissolution: | 30 May 2012 |
| Ideology: | Social democracy Reformism Progressivism |
| Position: | Centre-left |
| Native Name Lang: | it |
The Sammarinese Reformist Socialist Party (it|Partito Socialista Riformista Sammarinese, PSRS) was a social-democratic political party in San Marino formed from a regional split from the Party of Socialists and Democrats in Borgo Maggiore.
On 30 May 2012, the party merged with the New Socialist Party to form the modern-day Socialist Party.[1]