Wiktoria Gajosz (born 6 July 2006) is a Polish sprinter.

[1] In July 2024, she set a Polish national U20 record, and an U20 world leading time, of 36.82 seconds for the 300 metres, in Warsaw.

[2][3] That month, she won the Polish U20 400 metres title in Radom in 2024.

[5][6] She was a silver medalist at the 2024 World Athletics U20 Championships in the Mixed 4 × 400 metres relay in August 2024.

[8] A member of Tomasovia Tomaszów Lubelski, she attended IV Liceum Ogólnokształcące in Chełm.