| Honorific-Prefix: | Her Worship |
| Olga Zammitt | |
| Honorific-Suffix: | OBE, JP |
| Order: | 12th |
| Office: | Mayor of Gibraltar |
| Term Start: | 1 August 2009 |
| Term End: | 31 July 2010 |
| Deputy: | Anthony Lombard |
| Predecessor: | Solomon Levy |
| Successor: | Anthony Lombard |
| Constituency: | Gibraltar |
| Birth Date: | 31 August 1940 |
| Birth Place: | Gibraltar |
| Nationality: | British |
| Spouse: | Leslie Zammit |
| Profession: | Teacher |
| Order2: | 1st |
| Office2: | Deputy Mayor of Gibraltar |
| Term Start2: | 1 August 2008 |
| Term End2: | 31 July 2009 |
| Successor2: | Anthony Lombard |
Olga Mercedes Zammitt OBE, JP, (born 31 August 1940) is a retired Gibraltarian teacher and former Mayor of Gibraltar. She held office from 1 August 2009[1] to 31 July 2010.[2]
Zammitt was appointed Officer of the Order of the British Empire (OBE) in the 2011 Birthday Honours for services to the community in Gibraltar.