The 1989 BP National Championships was a men's tennis tournament played on outdoor hard courts in Wellington, New Zealand and was part of the 1989 Nabisco Grand Prix. It was the 2nd edition of the tournament and was held from 2 January through 8 January 1989. Eighth-seeded Kelly Evernden won the singles title.
|1989 BP National Championships|
|Draw||32S / 16D|
|Surface||Hard / outdoor|
|Location||Wellington, New Zealand|
|Peter Doohan / Laurie Warder|
- It was Evernden's 1st singles title of the year and the 3rd of his career.
- It was Doohan's only title of the year and the 6th of his career. It was Warder's only title of the year and the 6th of his career.
- 1989 Fernleaf Classic – women's tournament