John Mowlem (9 August 1870 – 12 October 1951) was a New Zealand rugby union player.
A forward, Mowlem thirteen times represented Manawatu at a provincial level, and after transfer to Greytown he played four matches for Wairarapa.
He was a member of the New Zealand national side, the All Blacks, on the 1893 tour to Australia.
He played four matches for the All Blacks, but did not play in an international.
This biographical article relating to New Zealand rugby union, about a person born in the 1870s, is a stub.