Tiaki Omana (18 December 1891 – 24 June 1970), also known by the English name Jack Ormond, was a New Zealand rugby union player and politician.

Omana played Ranfurly Shield matches for his province, Hawke's Bay, and once for the All Blacks in 1923 against a touring team from New South Wales.

Former press gallery reporter Leslie Hobbs wrote that "Jack Omana, was one of the most popular and respected members of the House, but he never worked up any enthusiasm for party politics, particularly the fighting side of it.

"[4] He was noted as frequently bringing boxes of kumara grown his farm in Mahia back to Wellington as presents for his friend, but political adversary, Keith Holyoake (a fellow farmer).

[1] Omana married Nellie Airini Elizabeth Perry at the Cathedral Church of St John the Evangelist in Napier on 23 February 1921.