An electoral reform referendum on whether to replace the first-past-the-post voting system with mixed-member proportional representation was held in New Zealand on Saturday, 6 November 1993, in conjunction with that year's general election. This was follow-up to a referendum to test public sentiment that had been held in 1992. The 1992 referendum represented the first tangible governmental step towards electoral reform.
The results of the 1993 referendum overwhelmingly supported change and selected MMP as the preferred electoral system to replace FPP. The "Yes" side prevailed with 53.86% of the vote. The 1996 general election was the first to use the new mixed-member proportional system. (The use of MMP was re-confirmed in 2011 referendum)