Peter Martins (born 27 October 1946) is a Danish ballet dancer and choreographer. Martins was a principal dancer with the Royal Danish Ballet and with the New York City Ballet, where he joined George Balanchine, Jerome Robbins, and John Taras as balletmaster in 1981. He retired from dancing in 1983, having achieved the rank of danseur noble, becoming Co-Ballet Master-In-Chief with Robbins. From 1990 until January 2018, he was solely responsible for artistic leadership of City Ballet.