Hendrik Scholtz Vosloo Muller (26 March 1922 – 26 April 1977) was a South African rugby union footballer.

Muller made his international debut on 16 July 1949, in the starting line-up in the first of four matches against the touring New Zealand All Blacks.

The series was tied up as a four to nil whitewash of the All Blacks, as the Springboks won the fourth encounter 11–8 in Port Elizabeth.

After defeating Scotland, the Springboks had the tough task of playing the other three home nations, as well as France on the rest of the tour.

The Springboks ran in six tries to win 25–3, Muller scoring one of the tries, as well as adding a conversion, and thus, South Africa completing a grand slam tour of Europe.