Alfred "Butch" Beard will be named the Howard University men's basketball coach at a Wednesday news conference, according to university sources. Beard, 43, is a former NBA guard and has been an assistant coach with the New Jersey Nets the past two seasons.

Neither the sports information office nor Athletic Director William Moultrie would confirm Beard's appointment to replace A.B. Williamson, who was dismissed two months ago. Williamson was the most successful basketball coach in the school's history, compiling a 240-182 record in 15 seasons.

Moultrie said Howard President Franklyn G. Jenifer would make an announcement Wednesday.

"I don't know who it is myself so I will see you Wednesday," Moultrie said.

Beard could not be reached for comment.

Beard played several seasons for the Cleveland Cavaliers, Golden State Warriors and New York Knicks and was an integral part of the Warriors' team that swept the Washington Bullets in four games for the championship in 1975.

According to sources, Beard was not one of the original three recommendations of the selection committee sent to Jenifer. Sources said Jenifer was not satisfied with the three choices and decided to continue the search. Beard was contacted and interviewed several weeks ago.

"The president said he preferred to have someone who has experience at a higher level," said one source. "He said there is no reason Howard cannot have the same type of program as Duke. We can't be a UNLV but there is no reason we can't be as superior in athletics as well as academics. He did a lot of work to find the person chosen. Mr. Jenifer was not exactly looking for a pro coach but wanted someone who is experienced. He went after top collegiate coaches also. He is very serious about taking the athletic program forward."

The three choices of the committee are said to have been Walt Hazzard, former NBA player and coach at UCLA; Tyrone Hart, former player at Howard under Williamson and present head coach at Montgomery-Takoma Park; and Leonard Drake, assistant coach at Ball State. Moultrie said 56 persons submitted applications and 12 were interviewed. Others interviewed include Wil Jones, former UDC coach; Mike McLeese of Dunbar High School; and Ron Curtis, current Howard assistant.

"We thought Tyrone Hart would have been a great choice. That's not to take anything from the guy chosen," a source said. "Whoever is named, everyone here at Howard will support him 100 percent." U-Md. Assistant Resigns

Maryland assistant men's basketball coach Roger McCready has resigned after a year under Coach Gary Williams, the school announced yesterday.

McCready, 26, who came to Maryland last year from the University of Massachusetts, said in a statement released by the school that he wishes to pursue business interests.