Sally Voss of Congressional, back from her self-imposed one-year sabbatical from local golf competition, gained the final of the Women's Maryland Amateur Championship at Kenwood yesterday and will meet 18-year-old Karen Jones of Argyle in a match starting at 9:40 a.m. today.

Voss, 1978 Maryland champion, decided to pass up competition in this area last year to concentrate on her first year of medical school at the University of California in San Francisco. She defeated last year's titleholder, Patricia Thompson of Cumberland, 5 and 4, yesterday afternoon. She beat Kathy Thompson, wife of Kenwood pro Rod Thompson, 4 and 3, in the morning. Patricia Thompson eliminated Cindy Davis of Bel Air, 4 and 2, in her early match.

Jones was crowned the new women's district champion at Argyle last month. She defeated Bonnie Johnson of Bel Air, 3 and 2, yesterday morning, and eliminated Carol Davies of Washington, 1 up, in a hard-fought afternoon match. Davies defeated Mary Ellen Fedor of Chartwell, 4 and 3, in a morning contest.

Yesterday's play was one of the rare times that the golfers who gained the semi-finals had to play two matches in one day. But Voss as as hot as the weather.

She was two under par in the morning against Kathy Thompson and one under against Patricia Thompson before defeating the 19-year-old LSU sophomore. In the afternoon, Voss required only 22 putts for 14 holes and hit 10 greens in regulation.

Davies, four down after 11 holes to Lisa Abood Tuesday before coming back to win on the fifth extra hole, rallied against Jones but came up short. Davies was three down at the turn but reduced the deficit to one by the 17th.The 18th was halved with bogeys, though Davies almost squared the match when her 10-foot putt lipped the hole.