1990 York North federal by-election

{{Infobox election

| map_image =

| previous_election = 1988 Canadian federal election

| previous_year = 1988

| next_election = 1993 Canadian federal election

| popular_vote1 = 21,332

| next_year = 1993

| seats_for_election = Riding of York North

| turnout =

| colour1 = {{Canadian party colour|CA|Liberal|nohash}}

| party_colour = no

| image1 =

| percentage1 = 49.90%

| candidate1 = Maurizio Bevilacqua

| party1 = {{Canadian party colour|CA|Liberal|name}}

| after_party = {{Canadian party colour|CA|Liberal|name}}

| election_name = 1990 York North federal by-election

| colour3 = {{Canadian party colour|CA|PC|nohash}}

| popular_vote3 = 4,618

| percentage3 = 10.80%

| image3 =

| party_name = no

| ongoing = no

| colour2 = {{Canadian party colour|CA|NDP|nohash}}

| map_alt =

| candidate2 = Peter Devita

| party2 = {{Canadian party colour|CA|NDP|name}}

| popular_vote2 = 14,321

| percentage2 = 33.50%

| swing2 =

| map_size = 200px

| swing1 =

| title = MP

| type = Parliamentary

| posttitle = Elected MP

| before_election = Maurizio Bevilacqua

| before_party = {{Canadian party colour|CA|Liberal|name}}

| after_election = Maurizio Bevilacqua

| image2 =

| country = Canada

| election_date = {{Start date|1990|12|10}}

| candidate3 = Micheal O'Brien

| party3 = {{Canadian party colour|CA|PC|name}}

| swing3 =

}}

A by-election was held in the federal riding of York North in Ontario on December 10, 1990, following the election of Liberal MP Maurizio Bevilacqua being void by the courts.{{Cite web |last=Muller |first=Rick |date=2022-09-15 |title=Maurizio Bevilacqua: Leaving A Legacy Of Leadership |url=https://mycitylife.ca/people/special-feature/maurizio-bevilacqua-leaving-a-legacy-of-leadership/ |access-date=2024-03-01 |website=City Life Toronto Lifestyle Magazine |language=en-US}} In the 1988 election, Bevilacqua defeated the Progressive Conservative candidate Micheal O'Brien by only 77 votes so the election was re-run.

The by-election was held on the same day as another in Beauséjour in New Brunswick. The seat was won again for the Liberals by Maurizio Bevilacqua who increased his majority to over 7,000 votes over the NDP. The Progressive Conservatives were pushed into third place.