Millicent (Milly) Tanner (born 10 January 1999) is an English international track cyclist.

[2] Tanner became a British team champion after winning the team sprint Championship at the 2020 British National Track Championships with Blaine Ridge-Davis.

In 2021, Tanner won team sprint bronze at the UCI Track World Championships in Roubaix, France.

[4] At the 2023 British Cycling National Track Championships she won her second national title, after winning the team sprint again.

[5] The following year in 2024, she won a third team sprint title, at the 2024 British Cycling National Track Championships.