The 1991 British Columbia general election was the 35th provincial election in the Province of British Columbia, Canada. It was held to elect members of the Legislative Assembly of British Columbia. The election was called on September 19, 1991, and held on October 17, 1991.

The New Democratic Party of Mike Harcourt defeated the incumbent Social Credit Party of British Columbia, which had been beset by scandals during Bill Vander Zalm's only term as premier. Liberal Party leader Gordon Wilson surprised observers by leading his party to winning one-third of the votes cast and 23 percent of the seats, and forming the official opposition in the legislature after having held no seats at all since 1979. The new legislature met for the first time on March 17, 1992.

The election was held at the same time as a referendum on recall and initiative. It was also the first British Columbia general election with only single-member districts.

Under Vander Zalm's leadership, Socred's control shifted from urban fiscal conservatives to social conservatives. Vander Zalm seemingly cruised to victory in the 1986 provincial election, held just a month after he was sworn in. In truth, however, a number of more moderate Socreds were not at home with the party's rightward turn on social issues, and began defecting to the Liberals.

This process was exacerbated by Vander Zalm's eccentricity, and the constant scandals that plagued his government. As well, Vander Zalm allowed his principal secretary, David Poole, to amass a substantial amount of power, despite being unelected.

Vander Zalm resigned in April 1991 amid a conflict of interest scandal surrounding the sale of a theme park that he owned. Socred members elected the lesser-known Deputy Premier Rita Johnston, a close ally of Vander Zalm, to be their new leader, over Grace McCarthy, a longtime associate of former Premier Bill Bennett. Many viewed this as a mistake, as Johnston was close to the Vander Zalm legacy; even NDP leader Mike Harcourt admitted later that he preferred Johnston over McCarthy, as the latter would be a much tougher opponent in an election.

Johnston had little time to make up ground in the polls or distance herself from the now-detested Vander Zalm. Additionally, the Socreds were still bitterly divided over the bruising leadership contest. The NDP went into the elections as heavy favourites after leading in opinion polls for almost four years.

The Liberals, who had not been represented in the legislature since 1979, gained slightly in the polls due to great resentment against the ruling Socreds and skepticism towards the NDP. A turning point came when Wilson successfully took legal action to be included in the televised leaders' debate, which took place on 8 October. During the debate Johnston and Harcourt exchanged many bitter attacks, while Wilson, still not considered a serious contender, was able to successfully portray himself as an "outsider" who was above the partisan bickering of the other two parties. Liberal support surged dramatically as a result of Wilson's performance. One of the memorable moments of the debate came as Harcourt and Johnston argued loudly amongst each other, when Wilson pointed towards them and declared, "Here's a classic example of why nothing ever gets done in the province of British Columbia."