1975 New Zealand Open – Singles
# 1975 New Zealand Open – Singles

Björn Borg was the defending champion but did not compete that year.

Onny Parun won in the final 4–6, 6–4, 6–4, 6–7, 6–4 against Brian Fairlie.

## Seeds

Champion seeds are indicated in bold text while text in italics indicates the round in which those seeds were eliminated.

* Onny Parun (champion)
* Brian Fairlie (final)
* Ray Ruffels (quarterfinals)
* Syd Ball (quarterfinals)

## Draw

### Key

* Q = Qualifier
* WC = Wild card
* LL = Lucky loser
* Alt = Alternate
* SE = Special exempt
* PR = Protected ranking
* ITF = ITF entry
* JE = Junior exempt
* w/o = Walkover
* r = Retired
* d = Defaulted
* SR = Special ranking

### Final

| Semifinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final | Final | Final | Final |
| - | - | - | - | - | - | - | - | - | - | - | - | - |
| 1 | Onny Parun | 6 | 6 | 6 | | | | | | | | |
| | Jeff Simpson | 3 | 3 | 3 | | | | | | | | |
| | Jeff Simpson | 3 | 3 | 3 | | 1 | Onny Parun | 4 | 6 | 6 | 6 | 6 |
| | | | | | | 2 | Brian Fairlie | 6 | 4 | 4 | 7 | 4 |
| 2 | Brian Fairlie | 6 | 0 | 7 | 6 | 2 | Brian Fairlie | 6 | 4 | 4 | 7 | 4 |
| | Dick Crealy | 4 | 6 | 6 | 4 | | | | | | | |

### Top half

| First round | First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals |
| - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| 1 | O Parun | 6 | 6 | 3 | 6 | | | | | | | | | | | | | | | | | | |
| | J Narakka | 1 | 3 | 6 | 1 | 1 | O Parun | 6 | 6 | 6 | 2 | 17 | | | | | | | | | | | |
| | M Machette | 6 | 6 | 7 | | | M Machette | 4 | 7 | 4 | 6 | 15 | | | | | | | | | | | |
| | J Soares | 3 | 4 | 6 | | | | | | | | | 1 | O Parun | 7 | 6 | 7 | 6 | | | | | |
| | G Wimmer | 6 | 6 | 6 | | | | | | | | | | G Wimmer | 6 | 7 | 6 | 4 | | | | | |
| | G Slater | 2 | 4 | 3 | | | G Wimmer | 7 | 6 | 6 | | | | | | | | | | | | | |
| | G Oliver | 6 | 6 | 6 | | | G Oliver | 6 | 3 | 2 | | | | | | | | | | | | | |
| | M Prineas | 0 | 1 | 2 | | | | | | | | | | | | | | | 1 | O Parun | 6 | 6 | 6 |
| | J Simpson | 6 | 7 | 6 | | | | | | | | | | | | | | | | J Simpson | 3 | 3 | 3 |
| | T Parun | 3 | 6 | 3 | | | J Simpson | 6 | 7 | 6 | | | | | | | | | | | | | |
| | | | | | | | C Letcher | 3 | 5 | 4 | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | J Simpson | 7 | 7 | 6 | | | | | | |
| | R Simpson | 6 | 6 | 6 | | | | | | | | | 3 | R Ruffels | 6 | 6 | 2 | | | | | | |
| | L Palin | 3 | 4 | 1 | | | R Simpson | 7 | 3 | 5 | 6 | | | | | | | | | | | | |
| | G Halder | 3 | 0 | 5 | | 3 | R Ruffels | 6 | 6 | 7 | 7 | | | | | | | | | | | | |
| 3 | R Ruffels | 6 | 6 | 7 | | | | | | | | | | | | | | | | | | | |

### Bottom half

| First round | First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals |
| - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| 2 | B Fairlie | 6 | 6 | 6 | | | | | | | | | | | | | | | | | | | | |
| | R Jones | 4 | 4 | 3 | | 2 | B Fairlie | 6 | 6 | 6 | | | | | | | | | | | | | | |
| | J Loyo-Mayo | 2 | 7 | 6 | 6 | | J Loyo-Mayo | 3 | 0 | 0 | | | | | | | | | | | | | | |
| | C Lewis | 6 | 6 | 0 | 2 | | | | | | | | 2 | B Fairlie | 6 | 6 | 6 | | | | | | | |
| | S Carnahan | 6 | 6 | 6 | | | | | | | | | | S Carnahan | 3 | 2 | 4 | | | | | | | |
| | R Lewis | 3 | 3 | 1 | | | S Carnahan | 6 | 5 | | | | | | | | | | | | | | | |
| | B Carmichael | 6 | 3 | 6 | 6 | | B Carmichael | 7 | $4^r$ | | | | | | | | | | | | | | | |
| | F Whitaker | 2 | 6 | 3 | 4 | | | | | | | | | | | | | | 2 | B Fairlie | 6 | 0 | 7 | 6 |
| | D Crealy | 6 | 6 | 6 | | | | | | | | | | | | | | | | D Crealy | 4 | 6 | 6 | 4 |
| | P Langsford | 4 | 1 | 1 | | | D Crealy | 6 | 6 | 6 | | | | | | | | | | | | | | |
| | S Docherty | 7 | 7 | 7 | | | S Docherty | 4 | 2 | 4 | | | | | | | | | | | | | | |
| | W Cowley | 6 | 5 | 6 | | | | | | | | | | D Crealy | 4 | 6 | 6 | 7 | | | | | | |
| | M Timonen | 2 | 7 | 6 | 6 | | | | | | | | 4 | S Ball | 6 | 3 | 3 | 5 | | | | | | |
| | M Robinson | 6 | 6 | 0 | 1 | | M Timonen | 6 | 4 | 1 | 6 | 5 | | | | | | | | | | | | |
| | P Thompson | 3 | 1 | 6 | | 4 | S Ball | 4 | 6 | 6 | 4 | 7 | | | | | | | | | | | | |
| 4 | S Ball | 6 | 6 | 7 | | | | | | | | | | | | | | | | | | | | |
