A Multi-Genre Cosplay & Fan Convention in San Diego

Cos-Losseum Tag Guests & Vendors Tag Regulations Tag

Join us at San Diego's newest cosplay convention. Cos-Losseum brings together fans, cosplayers, and special guests from all corners of fandom.

Meet all your favorite actors, authors, and artists at Cos-Losseum 2016. We have a fantastic lineup of guests from the worlds of anime, fantasy, sci-fi, and comic books.

Read our weapons policy and the rules and regulations for our costume contest. We encourage a spirit of friendly competition, but take safety very seriously.

Learn about The Cosplay Initiative, LLC

Discover a new, multi-genre fan and cosplay convention in San Diego, California. Cos-Losseum is organized by The Cosplay Initiative, LLC, and dedicated to fans and cosplayers from every genre. Our organizers have more than 10 years of experience in the industry, and are working hard to make
Cos-Losseum 2016 truly unforgettable.

Our Mission
To provide a fun and exciting event where Cosplayers and fans can gather to meet, greet, and compete with each other and special guests.

Contact us to learn more about San Diego's newest cosplay convention.

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