The Left Alliance is the name of a number of left wing political parties:

Left Democratic Alliance in Bangladesh Alliance of the Left in Spain. Democratic Left Alliance (Poland) in Poland. Left Alliance (Finland) RISE – Scotland's Left Alliance Left Alliance - UK, a grouping including the Union of Liberal Students and the Communist Party of Great Britain Nordic Green Left Alliance, an alliance of Nordic left-wing parties Left Alliance (Australia), an Australian student movement that flourished in the 1980s and 1990s Leftist Alliance (Hungary), an alliance between Yes Solidarity for Hungary Movement and the Hungarian Workers' Party Leftist Alliance