| Election Name: | 1998 San Jose mayoral election |
| Flag Image: | Flag of San José, California.svg |
| Type: | presidential |
| Ongoing: | no |
| Previous Election: | 1994 San Jose mayoral election |
| Previous Year: | 1994 |
| Next Election: | 2002 San Jose mayoral election |
| Next Year: | 2002 |
| Election Date: | June 2, 1998 (first round) November 3, 1998 (runoff) |
| Turnout: | 40.05% (first round) 56.97% (runoff) |
| 1Blank: | First-round vote |
| 2Blank: | First-round percentage |
| 3Blank: | Second-round vote |
| 4Blank: | Second-round percentage |
| Candidate1: | Ron Gonzales |
| Party1: | Democratic Party (United States) |
| 1Data1: | 55,699 |
| 2Data1: | 41.61% |
| 3Data1: | 93,586 |
| 4Data1: | 47.31% |
| Candidate2: | Patricia Dando |
| Party2: | Nonpartisan candidate |
| 1Data2: | 46,097 |
| 2Data2: | 34.44% |
| 3Data2: | 89,293 |
| 4Data2: | 45.14% |
| Candidate3: | Kathy Chavez Napoli |
| Party3: | Nonpartisan candidate |
| 1Data3: | 14,220 |
| 2Data3: | 10.62% |
| Mayor | |
| Before Election: | Susan Hammer |
| Before Party: | Democratic Party (United States) |
| After Election: | Ron Gonzales |
| After Party: | Democratic Party (United States) |
The 1998 San Jose mayoral election was held on June 2 and November 3, 1998 to elect the Mayor of San Jose, California. It saw the election of Ron Gonzales.
Incumbent mayor Susan Hammer was term limited.
Because no candidate managed to receive a majority of the vote in the initial round of the election, a runoff election was held between the first round's top-two finishers.