| Election Name: | 1999 Philadelphia mayoral election |
| Country: | Philadelphia |
| Type: | presidential |
| Ongoing: | no |
| Previous Election: | 1995 Philadelphia mayoral election |
| Previous Year: | 1995 |
| Next Election: | 2003 Philadelphia mayoral election |
| Next Year: | 2003 |
| Election Date: | November 2, 1999 |
| Image1: | File:John F Street.jpg |
| Nominee1: | John F. Street |
| Party1: | Democratic Party (United States) |
| Popular Vote1: | 211,136 |
| Percentage1: | 49.52% |
| Nominee2: | Sam Katz |
| Party2: | Republican Party (United States) |
| Popular Vote2: | 203,908 |
| Percentage2: | 49.12% |
| Map Size: | 260px |
| Turnout: | 45%[1] 6 pp |
| Mayor | |
| Before Election: | Ed Rendell |
| Before Party: | Democratic Party (United States) |
| After Election: | John F. Street |
| After Party: | Democratic Party (United States) |
The 1999 Philadelphia mayoral election saw the narrow election of Democrat John F. Street.
Sam Katz was unopposed for the Republican nomination.