Annika Penickova (born September 11, 2009) is an American professional tennis player.

Alongside her twin sister, Kristina, she won the girls' doubles title at the 2025 Australian Open.

[2] Annika is a left-handed player, she won the girls' doubles champion at the 2025 Australian Open playing alongside her right-handed twin sister, Kristina.

[5][6] In the final they defeated in straight sets against Emerson Jones and Hannah Klugman.

[7][8] Their parents, Tomáš Pěnička and Olga Hostáková, are former tennis players from the Czech Republic.