WPIAL Girls’ Swimming & Diving Champions – 100-Yard Butterfly
| Year | 3A | 2A |
| 2023 | Sophie Shao (Fox Chapel) | Katie Jackovic (South Park) |
| 2022 | Sophie Shao (Fox Chapel) | Kira Schrecongost (Freeport) |
| 2021 | Sophie Shao (Fox Chapel) | Brittney Carmazzi (North Catholic) |
| 2020 | Sophie Shao (Fox Chapel) | Maria Mrosko (Laurel Highlands) |
| 2019 | Trinity Ward (Mt. Lebanon) | Payton Rayko (Indiana) |
| 2018 | Trinity Ward (Mt. Lebanon) | Payton Rayko (Indiana) |
| 2017 | Trinity Ward (Mt. Lebanon) | Payton Rayko (Indiana) |
| 2016 | Trinity Ward (Mt. Lebanon) | Sabrina Bowman (Saint Joseph) |
| 2015 | Kayla Churman (North Allegheny) | Sabrina Bowman (Saint Joseph) |
| 2014 | Kayla Churman (North Allegheny) | Sabrina Bowman (Saint Joseph) |
| 2013 | Kayla Churman (North Allegheny) | Margaret Gruber (Mars) |
| 2012 | Natalie Johnsen (Upper St. Clair) | Margaret Gruber (Mars) |
| 2011 | Brittany Dudzinski (Upper St. Clair) * Natalie Johnsen (Upper St. Clair) * |
Margaret Gruber (Mars) |
| 2010 | Zina Grogg (Moon) | Andrea Marko (Greensburg Central Catholic) |
| 2009 | Zina Grogg (Moon) | Andrea Marko (Greensburg Central Catholic) |
| 2008 | Abby Myers (Seneca Valley) | Andrea Marko (Greensburg Central Catholic) |
| 2007 | Zina Grogg (Moon) | Brianna Dombrosky (Mt. Pleasant) |
| 2006 | Katie Rich (Peters Township) | Kelsey Gruschecky (Yough) |
| 2005 | Colleen Toth (Bethel Park) | Kelsey Gruschecky (Yough) |
| 2004 | Colleen Toth (Bethel Park) | Mallory Dietrich (Oakland Catholic) |
| 2003 | Colleen Toth (Bethel Park) | Annika Thomas (Keystone Oaks) |
| 2002 | Ashley Cunningham (Mt. Lebanon) | Amanda Yothers (West Allegheny) |
| 2001 | Jessica Siegele (North Allegheny) | Amanda Yothers (West Allegheny) |
| 2000 | Megan Rudinsky (Bethel Park) | Jaymie Van Kooten (Oakland Catholic) |
| 1999 | Jen Fraas (Bethel Park) | Jaymie Van Kooten (Oakland Catholic) |
| 1998 | Amy Deger (Oakland Catholic) | Cristina Davic (Moon) |
| 1997 | Amy Deger (Oakland Catholic) | Denise Jancart (South Fayette) |
| 1996 | Kendra Kelly (Upper St. Clair) | Amy Deger (Oakland Catholic) |
| 1995 | Kendra Kelly (Upper St. Clair) | Sara Trohaugh (Montour) |
| 1994 | Dawn Heckman (Greater Latrobe) | Becky Smullin (Hampton) |
| 1993 | Dawn Heckman (Greater Latrobe) | Lauri Ratica (Elizabeth Forward) |
| 1992 | Jenny Mackay (North Allegheny) | |
| 1991 | Ruth Lebeda (Steel Valley) | |
| 1990 | Rachel Slade (North Allegheny) | |
| 1989 | Kristen Zukowski (Pine-Richland) | |
| 1988 | Julie Rocks (Bethel Park) | |
| 1987 | Anne Spaeder (Gateway) * Julie Rocks (Bethel Park) * |
|
| 1986 | Julie Rocks (Bethel Park) | |
| 1985 | Michelle Chow (Gateway) | |
| 1984 | Melanie Buddemeyer (Penn Hills) | |
| 1983 | Melanie Buddemeyer (Penn Hills) | |
| 1982 | Melanie Buddemeyer (Penn Hills) | |
| 1981 | Melanie Buddemeyer (Penn Hills) | |
| 1980 | Jodi Eyles (Franklin Regional) |
Notes:
* – Denotes WPIAL co-champions.
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