The 13th Extraordinary Convention of the Republican People's Party (Turkish: 13. Cumhuriyet Halk Partisi Olağanüstü Kurultayı) was held on 29 and 30 January 2005 in order to elect a leader for the Republican People's Party (CHP), a Turkish centre-left political party. Incumbent leader Deniz Baykal was challenged by the Mayor of Şişli, Mustafa Sarıgül for the leadership. The convention was marred by violence between supporters of the two rivals, who had accused each other of corruption and elitism during their speeches. The final result was a victory for Baykal, who won 59.4% of the delegates' votes against Sarıgül's 40.6%.