Renilla muelleri (also spelled R. mulleri or R. müilleri) is a species of sea pansy.

It has been reported from the Gulf Coast of the United States, notably the Florida panhandle,[2] but is also reported from the eastern coast of South America.

[3] It is thought to be a euryhaline littoral species, found to a depth of up to 150 meters.

[4] Williams, Gary C. "Index Pennatulacea Annotated Bibliography and Indexes of the Sea Pens (Coelenterata: Octocorallia) of the World 1469-1999".

Proceedings of the California Academy of Sciences.