Delia Mathews (born 1990) is a New Zealand-born ballet dancer. She is a principal dancer at the Birmingham Royal Ballet.
Mathews was born in Rotorua, New Zealand, and began ballet lessons with her sister in Tauranga at the age of 5. When she was 15, she was accepted into the Royal Ballet School in London, and studied there for three years. On graduating, Mathews received the Dame Ninette de Valois Award for Most Outstanding Graduate. In 2008 she joined the Birmingham Royal Ballet and became a principal dancer in 2017.