The 1909 Alberta general election was the second general election held in the Province of Alberta, Canada. It took place on March 22, 1909, to elect 41 members to the 2nd Alberta Legislature. The incumbent Liberal Party led by Premier Alexander C. Rutherford achieved a re-election victory, securing a majority government by winning 36 out of the 41 seats in the legislature with just under 60 per cent of the popular vote. The Conservative Party led by Albert Robertson once again formed the official opposition, with only two members, and Robertson himself was defeated in his own seat in High River. The remaining three seats were divided among smaller parties and independent candidates.

The Alberta Liberal Party is a provincial political party in Alberta, Canada. Founded in 1905, it is the oldest active political party in Alberta and was the dominant political party until the 1921 election, with the first three provincial Premiers being Liberals. Since 1921, it has formed the official opposition in the Legislative Assembly of Alberta several times, most recently from 1993 until 2012. Fourteen Liberals have served as Leader of the Opposition of Alberta.