Sonia Beatriz Ayaucán Ciudad (born 1 April 1969) is a retired Peruvian female volleyball player. She was part of the Peru women's national volleyball team. She was a member of the Peruvian team that won third place in the World Championship in 1986. She was awarded the prize for the best receiver at the 1990 FIVB Volleyball Women's World Championship and won the title at the 1993 Women's South American Volleyball Championship. On club level she played with .