Ella Luise Seidel (born 14 February 2005) is a German professional tennis player.

[2] She also spent time training in Kühlungsborn, a Baltic Sea resort town where her parents owned a holiday home in.

[3] Seidel made her WTA main draw debut at the 2022 Hamburg European Open in the doubles draw partnering with Nastasja Schunk, winning her first round match against Elixane Lechemia and Sabrina Santamaria.

[4] In singles, she made her main-draw debut as a wildcard at the WTA 250 2023 Hamburg European Open, losing to compatriot Jule Niemeier in the first round.

172, she made her Grand Slam debut at the 2024 Australian Open on her first attempt of qualifying at any Major,[6][7] where she lost to world No.