The Pengkalan Pasir by-election was held on 6 December 2005 in the Pengkalan Pasir state assembly constituency of the PAS-governed state of Kelantan, Malaysia. Nominations were held on 27 November 2005, and the election was contested by Hanifa Ahmad of Pan-Malaysian Islamic Party (PAS), Hanafi Mamat of the United Malays National Organisation (UMNO) in the Barisan Nasional (BN) coalition, and Ibrahim Ali, an independent candidate. The by-election was necessitated after the death of the incumbent, from PAS, on 31 October because of cancer. Wan Abdul Aziz defeated Hanafi by 55 votes in the 2004 general election. In 2005, there are 18,411 eligible voters and 195 registered postal voters; 94.8% Malay and 5.2% Chinese in Pengkalan Pasir.