Rosy Marie Simas is a Seneca multidisciplinary artist and choreographer in the United States.

Rosy Marie Simas is a Haudenosaunee Heron Clan woman and an enrolled member of the Seneca Nation of Indians.

[3] As a choreographer, Simas creates work for stage and installation that unifies movement, time-based media, sound, and sculpture.

[4] Their collaborative works include: We Wait In The Darkness (2014);[5] Skin(s) (2012);[6] Weave (2019);[7] Threshold, a film with photographer Douglas Beasley (2013);[8] and WEave:HERE with Heid E. Erdrich (2019).

[9] In addition, Simas has collaborated with Deborah Jinza Thayer.