Seren Bundy-Davies (born 30 December 1994) is a Welsh track and field sprinter who competes in the 400 metres for Great Britain.
She came to international prominence at the 2015 European Athletics Indoor Championships, winning bronze in the 400 metres and silver in the 4 × 400 metres relay.
She won a Bronze medal in the 4 × 400 m relay at the 2015 World Championships in Athletics.