She-Hulk Vol.2: Superhuman Law

Japanese translated version of the She-Hulk (2004-2005) tradebacks with original cover art featuring her in her boxing attire.

The Simpsons - Season 27, Episode 8: Paths of Glory

 

The bar Knockers has a banner with a couple of silhouettes of female boxers for some reason. No actual female boxing is shown inside. 

Chainsaw Man - Episode 4: Rescue

https://www.youtube.com/watch?v=xIKW3NKYBWw

Ending sequence featuring Power dressed as a boxer.

Hamster and Gretel - Season 1, Episode 17: The Nightmarionette

 

Kevin tries to help his sister Gretel overcome her fear of toaster scorpion monsters using immersion therapy. Short scene in a musical segment.

Ani ni Tsukeru Kusuri wa Nai! 5 - Episode 11: Training Equipment

 

Fen Shi challenges his younger sister Miao to a sparring match. Things don't end well for him. Short.

The Guava Juice Show - Season 1, Episode 1: Do Not Eat This SPICY PEPPER

 

https://youtu.be/PJn1BbM7a5o?t=75

Jenny is shown reading a comic book(?) featuring a female kick boxer on the cover.

Harley Quinn Vol. 4 #17

 

Harley Quinn dreams about herself in a boxing match against Verdict.

A Couple of Cuckoos - Episode 12: I Don't Like It, Yet

https://www.youtube.com/watch?v=PLwjWadfcrs

Erika Amano invites Nagi Umino to join her on her kickboxing workout.

Harley Quinn Vol. 4 #17

Cover art of Harley Quinn and Verdict in the ring.

Harley Quinn Vol. 4 #15

 

Variant cover of boxer Harley Quinn.

Aharen-san wa Hakarenai - Episode 8: Time for the Summer Festival, Huh?

Tobaru-sensei imagines herself and Mitsuki Ooshiro as boxers. Still image.

Harley Quinn Vol. 4 #21

Variant cover featuring Harley in gloves. 

Bratz: Go to Paris the Movie

https://youtu.be/WaVx-F0T84E?t=1918

https://youtu.be/PnO_402ka-k?t=2772

A couple of scenes involving Sasha working the heavy bag.

Angel Links - Episode 6: Crossroads

 

Quick scene of Valeria Vertone sparring with a male opponent.