The new Middlesex FA Girls' Cups replace the previous Capital Girls' Cups competitions following the growth of the Girls' game during The FA's Gameplan For Growth between 2017 - 2020. The Girls' U12 Cup is open to all under 12 girls' teams affiliated to the Association.

Established: 2021

First Winners: London Bees

Current holders: Hitchin Belles Youth Purples U12