PIAA Girls’ Swimming & Diving Individual Champions – 100 Freestyle
| Year | Winner (School) | Class | Championship Time & Runner-Up |
| 2023 | Lily King (Mt. Pleasant) | 2A | 48.93*; def. Elise Nardozzi (Northgate) by 0.60 |
| 2022 | Lily King (Mt. Pleasant) | 2A | 49.78; def. Elise Nardozzi (Northgate) by 0.65 |
| 2019 | Karen Siddoway (Northgate) | 2A | 50.36; def. Noel Fresa (Upper Perkiomen) by 0.60 |
| 2017 | Taylor Petrak (Ellwood City) | 2A | 50.42 |
| 2016 | Emily Zincosky (Geibel Catholic) | 2A | 49.96 |
| 2000 | Cindy Weir (Penn-Trafford) | 3A | 51.82 |
| Liz Daniels (Shady Side Academy) | 2A | 51.31 | |
| 1999 | Jen Fraas (Bethel Park) | 3A | 51.56 |
| 1994 | Merel Hommen (Upper St. Clair) | 3A | 51.44 |
| Courtney South (Quaker Valley) | 2A | 51.98 | |
| 1993 | Merel Hommen (Upper St. Clair) | 3A | 51.66 |
| 1989 | Melanie Morgan (Gateway) | 51.60 | |
| 1988 | Melanie Morgan (Gateway) | 50.27 | |
| 1987 | Melanie Morgan (Gateway) | 51.52 | |
| 1986 | Michelle Chow (Gateway) | 51.90 | |
| 1985 | Michelle Chow (Gateway) | 52.40 | |
| 1984 | Michelle Chow (Gateway) | 51.63 | |
| 1983 | Michelle Chow (Gateway) | 51.79 | |
| 1982 | Jodi Eyles (Franklin Regional) | 51.37 | |
| 1981 | Linda Krumwiede (Fox Chapel) | 52.99 | |
| 1975 | Kathy Stetler (Riverview) | 52.71 | |
| 1974 | Kathy Stetler (Riverview) | 54.00 |
* – Denotes PIAA record.
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