The Yellowhead or Mohua (Mohoua ochrocephala) is a small insect-eating bird that is endemic to New Zealand's South Island. The Yellowhead and its close relative, the Whitehead have sympatric distributions as, conversely, the latter is found only on the North island and several small islands surrounding it. Although abundant in the 1800s, particularly in beech forests from Nelson and the Marlborough Sounds to Southland and Stewart Island/Rakiura, they declined dramatically in the early 1900s due to the introduction of ship rats and mustelids.

Yellowhead is a federal electoral district in Alberta, Canada, that has been represented in the Canadian House of Commons since 1979. The district is in west-central Alberta, and represents the counties of Yellowhead, Woodlands, Lac Ste. Anne, Barrhead, the improvement districts No. 9 (Willmore) and No. 12 (Jasper), the special municipality of Jasper and parts of Greenview, Brazeau, Parkland and Clearwater.