| Party of Democrats | |
| Native Name: | Partito dei Democratici |
| Country: | San Marino |
| Colorcode: | red |
| Foundation: | 25 March 2001 |
| Dissolved: | 25 March 2005 |
| Merged: | Party of Socialists and Democrats |
| Merger: | PPDS Ideas in Motion Socialists for Reform |
| Ideology: | Social democracy Democratic socialism |
| International: | Socialist International |
| Affiliation1 Title: | Italian counterpart |
| Affiliation1: | Democrats of the Left |
| Position: | Centre-left |
| Colours: | Red |
| Native Name Lang: | it |
The Party of Democrats (it|Partito dei Democratici, PD) was a social-democratic[1] and democratic socialist political party in San Marino. Its counterpart in Italy was the Democrats of the Left.
The PD had its origins in Sammarinese Communist Party (PCS), which had changed its name to the Sammarinese Democratic Progressive Party (PPDS) in 1990. On 25 March 2001 the PPDS merged with Ideas in Motion and the Socialists for Reform to form the PD. In 2005 the party finally merged with the Sammarinese Socialist Party (PSS) to form the Party of Socialists and Democrats (PSD). This led to the split of the left-wing faction, which formed the Left Party (PdS).