Klavdiya Yakovlevna Mayuchaya (née Lapteva; Russian: Клавдия Яковлевна Маючая (Лаптева); 15 May 1918 – 14 October 1989) was a Soviet track and field athlete who competed mainly in the javelin throw.

The following year she defended that title and also improved her best to 45.88 m (150 ft 6+1⁄4 in) – a mark only bettered by Olympic medallist Luise Krüger that season.

She was part of a Soviet medal sweep of the women's throws, alongside Tatyana Sevryokova and Nina Dumbadze.

[7] It was not until 1949 that the official world record was brought beyond fifty metres; Natalya Smirnitskaya achieved that feat with a throw of 53.41 m (175 ft 2+3⁄4 in).

[2] After 1947, the standard of women's throwing in the Soviet Union increased and Mayuchaya faced competition from Smirnitskaya, Galina Zybina and Aleksandra Chudina, among others.