Mayor Marion Barry announced the appointment yesterday of nine special assistants, including several past associates and campaign aides, as part of his reorganization of the mayor's personal office staff.

The new appointments, along with others announced earlier, gave Barry a staff of top-level aides that appears to be significantly larger than that of Walter E. Washington.

Barry strongly defended the realignment plan as necessary to give the mayor control over what he described as the District of Columbia's "runaway bureaucracy."

"The mayor was a great person," Barry said of Washington. "But he didn't know too much from day to day about what was happening... A lot of things happened in the government in the past and nobody knew about it. I'm now being certain I know about it."

Last month Barry announced the appointment of 12 persons to the mayor's personal office staff, including a new city administrator and five persons in the newly created position of assistant city administrator.

The new alignment is one designed for a chief executive who believes, as Barry once said, that "the mayor does not have to know everything about everything." Barry has indicated that he does not want to be befuddled and bogged down by taking a personal role in solving such basic city problems as filling potholes, as Washington is said to have often done.

"I don't want to sit in a meeting for an hour to try to figure out how you get window panes in a government building," Barry said yesterday. "I just want them in... I don't want to see (department heads) every day if they don't have anything to talk to me about."

Rather, Barry wants to be free to develop administration policy and "set the tone" of government, he said.

The new mayor, who began his second week in office yesterday, refused to characterize the realignment as an increase in the city's bureaucracy.

"I said I was going to manage the government. If I need people around to do that, I'm not increasing anything," Barry said. "That's not a bureaucratic layer. That's a way of getting things done fast. The realignment is a way of getting Marion Barry (in) control of the government."

Neither Barry nor his top aides could immediately say yesterday how the payroll for the new staff compared with that of Washington's aides. Barry did say, however, "There'll probably be some net growth. How, much, I don't know yet."

The new office structure is a marked departure from Washington's more personalized style, in which the city administrator had a staff of only two and most department heads reported directly to the mayor -- sometimes, some city hall observers have said, on an infrequent basis.

Yesterday, Barry appointed Diane C. Lewis, 33, a legislative officer with the city's school system, as special assistant for education. He chose women's rights advocate Audrey Rowe, 32, as special assistant for youth affairs and lawyer Matthew Shannon, 29, as special assistant for labor and religious affairs.

Anita Bonds, 33, who was deputy manager of Barry's election campaign, and Warren Graves, 35, who served as deputy manager of Washington's illfated reelection campaign, will serve as special assistants for constituent services, Barry said.

Betty King, 46, who was coordinator of special events for the Barry election campaign, and Valerie Barry, a former City Council aide who is no relation to the mayor, will be special assistants designated to oversee operations of the city's more than 150 boards and commissions.

Barry also will have two general special assistants -- Lillian Adkins Sedgwick, 43, vice chairman of the D.C. Democratic State Committee and cochairman of Barry's campaign, and Edward M. Meyers, 35, who was Barry's executive assistant on the City Council.

Barry also announced yesterday the formal appointment of his longtime friend Herbert O. Reid as legal counsel to the mayor, and Marlene Johnson, a former City Council aide, as Reid's deputy.

Also appointed were Patricia Seldon as executive assistant to the mayor; Sybil Hammond, appoiintments secretary; Marie Dias, special assistant to general assistant Ivanhoe Donaldson; Tina Smith, executive assistant to Donaldson; Kay Campbell McGrath, special assistant in the city administrator's office; and Lynn Bumbray, administrative assistant for Barry's wife Effi.