Two oil paintings, worth a total of about $30,000, have been stolen from The Art Fund Gallery at 1338 Wisconsin Ave. NW, D.C. police reported yesterday.

Barbara Schneder, manager of the art gallery, said the paintings were stolen sometime between 5 p.m. Sunday when the gallery closed and Wednesday morning. She said the gallery's owner, William Lewis, discovered the two paintings missing when he arrived to open the gallery about 9 a.m. Wednesday.

One of the missing paintings is entitled "Mrs. Wyeth" and is valued at $20,000, Schneder said. It is a portrait of yandrew Wyeth's mother as a cowgirl, painted by his father, N. C. Wyeth. The oil painting is 24 inches by 24 3/4 inches and depicts a woman sitting on a bronco. The woman is twirling a lasso about her head.

She said the other missing painting is "Wedding Morn," by Christian Mayr. It was for sale for $9,300. The painting depicts three-quarter length figures of a bride in a white gown and veil with another woman in a deep red velvet dress. The woman has an arm around the bride's waist and her head on the bride's shoulder. The painting is signed with the artist's name, a date, 1834, and "N.Y."

Anyone with any information on the whereabouts of the paintings is asked to call the burglary squad at 727-4420.