| Election Name: | 1955 Baltimore mayoral election |
| Flag Image: | Flag of Baltimore, Maryland.svg |
| Type: | Presidential |
| Ongoing: | no |
| Previous Election: | 1951 Baltimore mayoral election |
| Previous Year: | 1951 |
| Next Election: | 1959 Baltimore mayoral election |
| Next Year: | 1959 |
| Election Date: | May 3, 1955 |
| Candidate1: | Thomas D'Alesandro Jr. |
| Party1: | Democratic Party (United States) |
| Popular Vote1: | 119,413 |
| Percentage1: | 55.60% |
| Candidate2: | Samuel Hopkins |
| Party2: | Republican Party (United States) |
| Popular Vote2: | 95,349 |
| Percentage2: | 44.40% |
| Mayor | |
| Before Election: | Thomas D'Alesandro Jr. |
| Before Party: | Democratic Party (United States) |
| After Election: | Thomas D'Alesandro Jr. |
| After Party: | Democratic Party (United States) |
The 1955 Baltimore mayoral election saw reelection of Thomas D'Alesandro Jr. to a third consecutive term as mayor.
The general election was held May 3.
D'Alesandro faced Republican Samuel Hopkins. Hopkins had served a four-year term in the Maryland House of Delegates, having been elected in 1950.[1]