The All People's Congress (APC) is one of the two major political parties in Sierra Leone, the other being it main political rival the Sierra Leone People's Party (SLPP). The APC is the main opposition party in Sierra Leone since 4 April 2018 when Julius Maada Bio of the SLPP won the 2018 presidential elections, though it maintains a majority in parliament.

The APC party was founded in 1960 by a breakaway group from the Sierra Leone People's Party that vehemently opposed elections before independence and instead supported independence before elections. The APC governed the country from 1968 to 1992 and became the ruling party again in 2007 after the party presidential candidate Ernest Bai Koroma won the 2007 presidential election, he contested and won the 2012 elections also.

The APC lost power on 4 April 2018, with its flagbearer Dr. Samura Mathew Wilson Kamara losing the presidential election to Julius Maada Bio.

The APC is very popular and receive large majority support in almost all of the northern Districts of Sierra Leone. The APC is also popular with significant majority (not overwhelming) in the Western Area (including Freetown).