Ivan Mercep ONZM (22 February 1930 – 8 April 2014) was a New Zealand architect.

[4] He married Halina Eva Trusz,[5] and one of their sons is broadcaster Simon Mercep.

[6] Following university, Mercep spent six years working and travelling overseas, before returning to New Zealand in 1960.

After working with KRTA, he entered into partnership in 1963 with Rodney Davies, Stephen Jelicich and Graham Smith to form what would become JASMaD (later Jasmax, one of the largest architectural firms in New Zealand).

[8] In the 1997 Queen's Birthday Honours, Mercep was appointed an Officer of the New Zealand Order of Merit, for services to architecture.