Presidential elections were held in the United States of Colombia in 1865 and February 1866.

[1] The result was a victory for Tomás Cipriano de Mosquera of the Liberal Party.

[2] The 1863 constitution changed the electoral system from a direct vote to an indirect vote.

The President was now elected on the basis of which candidate received the most votes in each state, with a candidate required to win in at least five of the nine states to be elected.

If no candidate received a majority, Congress would elect the President from the main contenders.