Robert Avedisian (December 26, 1937 – January 21, 2021), professionally known as Bob Avian, was an American choreographer, theatrical producer and director.

[1] Born in New York City to an Armenian family[2] in December 1937, Avian spent his early career dividing his time between dancing in such Broadway shows as West Side Story, Funny Girl, and Henry, Sweet Henry and working as a production assistant on projects like I Do!

He first met Michael Bennett when they both appeared in the European tour of West Side Story in 1959, and over the course of the next two decades the two collaborated on Promises, Promises, Coco, Company, Follies, Seesaw, God's Favorite, A Chorus Line, Ballroom, and Dreamgirls, Avian's first credit as a solo producer.

In London's West End, Avian choreographed Follies, Martin Guerre, The Witches of Eastwick, Miss Saigon, and Sunset Boulevard, repeating the assignment for the Broadway productions of the latter two.

Avian was openly gay and survived by his husband Peter Pileski, and his sister, Laura Nabedian.