The St. Louis WCT was a men's tennis tournament played in St. Louis, Missouri from 1970-1978. The event was part of the WCT Tour and was held on indoor carpet courts except from 1974-1975, when it was held on outdoor clay courts.
| Year | Champion | Runner-up | Score |
|---|---|---|---|
| 1970 | Rod Laver | Ken Rosewall | 6–1, 6–4 |
| 1971 | Not Available | ||
| 1972 | John Newcombe | Nikola Pilić | 6–3, 6–3 |
| 1973 | Stan Smith | Rod Laver | 6–4, 3–6, 6–4 |
| 1974 | Stan Smith | Alex Metreveli | 6–2, 3–6, 6–2 |
| 1975 | Vitas Gerulaitis | Roscoe Tanner | 2–6, 6–2, 6–3 |
| 1976 | Guillermo Vilas | Vijay Amritraj | 7–6, 6–2 |
| 1977 | Jimmy Connors | John Alexander | 7–6, 6–2 |
| 1978 | Sandy Mayer | Eddie Dibbs | 7–6, 6–4 |
| Year | Champion | Runner-up | Score |
|---|---|---|---|
| 1970 | Andrés Gimeno John Newcombe |
Roy Emerson Rod Laver |
6–4, 6–0 |
| 1971 | Not Available | ||
| 1972 | John Newcombe Tony Roche |
John Alexander Phil Dent |
7–6, 3–6, 6–4 |
| 1973 | Ove Nils Bengtson Jim McManus |
Terry Addison Colin Dibley |
6–2, 7–5 |
| 1974 | Ismail El Shafei Brian Fairlie |
Ross Case Geoff Masters |
7–6, 6–7, 7–6 |
| 1975 | Colin Dibley Ray Ruffels |
Ross Case Geoff Masters |
6–4, 6–4 |
| 1976 | Brian Gottfried Raúl Ramírez |
John Alexander Phil Dent |
6–4, 6–2 |
| 1977 | Ilie Năstase Adriano Panatta |
Vijay Amritraj Dick Stockton |
6–4, 3–6, 7–6 |
| 1978 | Bob Hewitt Frew McMillan |
Wojtek Fibak Tom Okker |
6–3, 6–2 |
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