Municipal elections in Richmond Hill, Ontario are held every four years, concurrent with other municipal elections in Ontario. Historically, elections were held more often. Elected positions include mayor, regional and local councillor and ward councillors (for six different wards) on the Richmond Hill City Council, as well as trustees for the York Region District School Board, the York Catholic District School Board and for a Conseillere for the Conseil Scholare de District de Centre SudOuest.

The first election in Richmond Hill was held January 6, 1873, just after its incorporation as a village.^[1] The campaign focused on the need to build a new high school as the one built in the 1850s was becoming crowded.

The vote tallies were (elected candidates bolded):

Concurrent with the 1985 election, two plebiscites were held, one relating to the ward system and one relating to Nuclear-free zones.^[2] Voters rejected the new ward system 5057 to 5460 and endorsed the nuclear-free zone declaration 7073 to 3272. Low voter turnout was credited to the poor weather and the lack of a mayoral race.^[3]

The election was held November 14, 1988.^[4][5] Issues in the election included the rapid building of houses in Richmond Hill which many felt had outpaced the growth of corresponding services.^[6] The relationship between the town councillors and developers had also been the subject of controversy.^[7]

One of the main issue of the 1991 election was plans to scrap the building of a large civic centre in the downtown area, and instead lease office space in Beaver Creek Industrial Park for that purpose, and build a single purpose library downtown instead of integrating it into a multi-purpose facility.^[8]

The 2003 election was held on November 12, 2003.

The election debates centred on urban sprawl, especially with regards to the Oak Ridges Moraine, waste management and urban renewal in the downtown area of Richmond Hill.^[16]

The 2010 election was held on October 25, 2010.^[25] This was the first election in Richmond Hill where the ballots were tabulated electronically instead of manually.^[26] Issues in the election included regional transit planning (e.g. VIVA rapidways, Line 1 Yonge extension), the future of the David Dunlap Observatory, and debt in York Region.^[27][28]

The 2014 election was held on October 27, 2014.

The 2018 election was held on October 22, 2018.

The 2022 mayoral by-election was held on January 18-24, 2022. City council passed By-Law 133-21 on October 13, 2021 authorizing the use of internet voting to accommodate voters for the by-election during the COVID-19 pandemic.

The 2022 election will be held on October 24, 2022.