Lowri Thomas (born 3 March 1999) is a British and Welsh track cyclist.
Thomas became a British Champion when winning the team sprint event at the 2022 British National Track Championships alongside teammates Emma Finucane and Rhian Edmunds. In April 2022, Thomas, Finucane and Edmunds once again combined to win a bronze medal in the team sprint in round one of the 2022 UCI Nations Cup in Glasgow, setting a new British record in the process. The trio then went on to win bronze in the team sprint at the 2022 Commonwealth Games. The Welsh team defeated Australia in the Bronze medal ride off, to take third spot on the podium behind New Zealand and Canada.
Having been selected as the travelling reserve for the Paris Olympic winning Team Sprint team, she was also selected as travelling reserve for the elite world championships at the 2024 UCI Track Cycling World Championships in Denmark.
At the 2025 UCI Track Cycling Nations Cup in Konya, Thomas was part of the British team sprint line-up that finished the event with a silver medal.
At the 2026 European Championships in Konya, Thomas was a member of the British trio who were defeated by Germany in the final of the team sprint.