Lina Nielsen (born 13 March 1996) is a British national record-holding sprinter,[1] hurdler and yoga instructor.

[6] After winning the 400 metres hurdles gold medal at the 2024 British Athletics Championships, Nielsen was subsequently named in the Great Britain team for the 2024 Summer Olympics[7] where she went out in the semi-finals after hitting a hurdle and falling to the track.

Recovering from that setback, Nielsen ran for Great Britain in the heat of the women's 4 x 400 metre relay, qualifying for the final in second place.

Lina is a yoga teacher, having undertaken her teaching training in Rishikesh in the summer of 2019.

She chose to keep her diagnosis private for nine years, but following a relapse two days prior to her World Athletics Championships heats in Oregon she decided to go public with her story.