| Country: | Malaysia |
| Malaysian Democratic Party | |
| Native Name: | Parti Demokratik Malaysia MDP |
| Abbreviation: | MDP |
| Leader: | Wee Choo Keong |
| Foundation: | 1998 |
| Dissolved: | 2008 |
| Split: | Democratic Action Party |
| Headquarters: | Petaling Jaya, Selangor |
| Youth Wing: | Young MDP |
| Ideology: | Social democracy |
| Position: | Centre-left |
| Colours: | Blue |
The Malaysian Democratic Party (MDP, Malay: Parti Demokratik Malaysia) was a political party in Malaysia formed by Wee Choo Keong in 1998, after he was expelled from Democratic Action Party (DAP) due to his fall-out and failed revolt against then secretary-general Lim Kit Siang.
MDP contested both the 1999 and 2004 general elections but failed to win any seats. Wee himself, who was the party secretary-general, even lost his deposit after contesting the Bukit Bintang parliamentary seat in 2004. He later entered the 2008 general elections on the Parti Keadilan Rakyat (PKR) ticket and won. Since then, MDP has become inactive even though Wee was dropped for the 2013 general elections.
| Election | Total seats won | Seats contested | Total votes | Share of votes | Outcome of election | Election leader |
|---|---|---|---|---|---|---|
| 1999 | 19 | 8,001 | 0.12% |
| Wee Choo Keong | |
| 2004 | 17 | 1,107 | 0.02% |
| Wee Choo Keong | |
| 2008 | 11 | 19,637 | 0.11% | 1 seat ; Opposition coalition | Wee Choo Keong | |