| Date: | July 18–24 |
| Edition: | 26th |
| Category: | Championship Series |
| Prize Money: | $525,000 |
| Draw: | 56S / 28D |
| Surface: | Hard / Outdoor |
| Location: | Washington D.C., United States |
| Champs: |  Stefan Edberg[1] |
| Champd: |  Grant Connell /  Patrick Galbraith[2] |
| Before Name: | Newsweek Tennis Classic |
| Main Name: | Washington Open (tennis) Washington Open |
The 1994 Legg Mason Tennis Classic was a men's tennis tournament played on outdoor hard courts at the William H.G. FitzGerald Tennis Center in Washington D.C., United States. It was the 26th edition of the tournament and was held from July 18 through July 24, 1994 and was part of the Championship Series of the 1994 ATP Tour. Second-seeded Stefan Edberg, who entered the tournament on a wildcard, won the singles title.
Stefan Edberg defeated 
Jason Stoltenberg 6–4, 6–2
Grant Connell / Patrick Galbraith defeated Jonas Björkman / Jakob Hlasek 6–4, 4–6, 6–3