2013 Season (inaugural season)
Portland Thorns FC / Western New York Flash
2014 Season
Kansas City Current / Seattle Reign FC
2015 Season
Kansas City Current (ceased operations in 2017, returned 2022) / Seattle Reign FC
2016 Season
Western New York Flash (folded in 2018, returned 2022 and rebranded as NJ/NY Gotham FC) / Portland Thorns FC
2017 Season
Portland Thorns FC / North Carolina Courage
2018 Season
North Carolina Courage / North Carolina Courage
2019 Season
North Carolina Courage / North Carolina Courage
2020 Season
Cancelled
2021 Season
Washington Spirit / Portland Thorns FC
2022 Season
Portland Thorns FC / OL Reign (rebranded from Seattle Reign FC, then back to Seattle Reign FC in 2024)
2023 Season
NJ/NY Gotham FC / San Diego Wave FC
2024 Season
TBD
See Ashley's attempt at a "What's what when it comes to championships" post for education and a laugh.