Onny Parun was the defending champion and won in the final 6–2, 6–3, 4–6, 6–3 against Brian Fairlie.
Onny Parun {'1': ", '2': ", '3': ", '4': "} (born 15 April 1947) is a former tennis player of Croatian descent from New Zealand, who was among the world's top 20 for five years and who reached the quarterfinals at Wimbledon in 1971 and 1972.
 He made the final of the Australian Open in 1973, losing to John Newcombe in four sets, and was a US Open quarterfinalist in 1973 and also a quarterfinalist at the French Open in 1975.
Marc-Kevin Goellner and Richey Reneberg were the defending champions, but did not participate together this year.
 Goellner partnered Wayne Ferreira, losing in the quarterfinals.
 Reneberg partnered Jonathan Stark, losing in the semifinals.
The 1976 New Zealand Open was a men's professional tennis tournament held in Auckland, New Zealand.
 It was an independent event, i.e. not part of the 1976 Grand Prix or 1976 World Championship Tennis circuit.
 The tournament was played on outdoor hard courts and was held from 5 January to 11 January 1976.
 Onny Parun won the singles title.
Justin Gimelstob and Richey Reneberg were the defending champions, but Gimelstob did not participate this year.
 Reneberg partnered Jared Palmer, successfully defending his title.
Jared Palmer and Richey Reneberg were the defending champions but only Reneberg competed that year with Jim Grabb.
Richey Reneberg (born October 5, 1965) is an American former professional tennis player.
Patrick McEnroe and Richey Reneberg were the defending champions but only Reneberg competed that year with Jim Grabb.
Jim Grabb and Richey Reneberg were the defending champions, but did not participate together this year.
 Grabb partnered Wayne Black, losing in the first round.
 Reneberg partnered Sjeng Schalken, losing in the first round.
Jim Grabb and Richey Reneberg were the defending champions, but Reneberg did not participate this year.
 Grabb partnered Jared Palmer, finishing runner-up.

Question: Are Onny Parun and Richey Reneberg the same nationality?
Answer: no