Alexei Osipovich Ratmansky (Russian: Алексей Осипович Ратманский, born August 27, 1968) is a Russian-Ukrainian-American[1] choreographer and former ballet dancer.

The Critics' Circle in London has named the Bolshoi "Best Foreign Company" under Ratmansky's direction, in 2005 and 2007, and he received its National Dance Award for The Bright Stream.

Its performance in London earned Ratmansky the praise from New York Times reviewer Alastair Macaulay of being "the most gifted choreographer specializing in classical ballet today.

"[10] In 2014, Ratmansky took his career in a new direction when he reconstructed Marius Petipa's final revival of Paquita from the Sergeyev Collection.

In March 2015, he mounted his second Petipa reconstruction for American Ballet Theatre - The Sleeping Beauty, which premièred in Orange County and was later staged at the Teatro alla Scala.

[7] In January 2023 the New York City Ballet announced that Ratmansky would join them as an artist in residence in August 2023.