| Election Name: | 1920 New York gubernatorial election |
| Country: | New York |
| Flag Image: | Flag of New York (1909–2020).svg |
| Type: | presidential |
| Ongoing: | no |
| Previous Election: | 1918 New York gubernatorial election |
| Previous Year: | 1918 |
| Next Election: | 1922 New York state election |
| Next Year: | 1922 |
| Election Date: | November 2, 1920 |
| Image1: | File:NathanLMiller.jpg |
| Nominee1: | Nathan L. Miller |
| Party1: | Republican Party (United States) |
| Popular Vote1: | 1,335,878 |
| Percentage1: | 46.58% |
| Nominee2: | Al Smith |
| Party2: | Democratic Party (United States) |
| Popular Vote2: | 1,261,812 |
| Percentage2: | 44.00% |
| Image3: | Jos. D. Cannon LCCN2014710989.jpg |
| Nominee3: | Joseph D. Cannon |
| Party3: | Socialist Party of America |
| Popular Vote3: | 159,804 |
| Percentage3: | 5.57% |
| Governor | |
| Before Election: | Al Smith |
| Before Party: | Democratic Party (United States) |
| After Election: | Nathan L. Miller |
| After Party: | Republican Party (United States) |
The 1920 New York gubernatorial election took place on November 2, 1920, to elect the Governor and Lieutenant Governor of New York, concurrently with elections to the United States Senate in other states and elections to the United States House of Representatives and various state and local elections.
Despite losing reelection Al Smith would regain the governorship following his victory in the 1922 New York gubernatorial election and later win the nomination as the Democratic candidate in the 1928 Presidential Election.
Following his defeat, Thompson ran in the general election as a candidate of the Prohibition Party.