A shoemaker and a busboy gave money to Mayor Marion Barry's reelection campaign, but an analysis of the $359,430 Barry received in the last three months shows that businesses and individuals with a heavy stake in District development and contracts were the most generous contributors.

Barry's campaign chest has benefited heavily from a pattern of giving in which companies and individuals use multiple corporate entities to contribute funds -- a legal way to surmount the $2,000 limit on contributions to a mayoral campaign from individuals, political action committees and companies.

Real estate developers and builders, in particular, used this vehicle in the months of March, April and May, according to campaign records submitted Tuesday to the D.C. Office of Campaign Finance. Examples:

*Jeffrey N. Cohen, a developer and Barry ally who is heading a multimillion-dollar redevelopment project in the city's Shaw area, contributed $1,000 personally early this year. In addition, two limited partnerships in which Cohen serves as general partner -- Sixteenth Street Associates and 1630 Connecticut Avenue Associates -- each contributed $2,000 in June.

*Quadrangle Development Corp., a development firm headed by Robert Gladstone, gave $2,000 on May 12. On the same day, three limited partnerships in which Quadrangle served as general partner gave $1,000 each.

*Sigal/Zuckerman, a development partnership headed by Shelton Zuckerman and Ellen Sigal, contributed $2,000 in April. In addition, Zuckerman personally contributed $2,000; Sigal gave $2,000, and Sigal Construction Corp., headed by her husband Gerald Sigal, contributed $2,000.

Meanwhile, in the hotly contested race for the Ward 3 seat on the D.C. City Council, records show that the leading fund raiser, Mary Draper Janney, drew contributions from about 390 individuals who gave $33,259 in March, April and May.

The large number of contributors defies prediction by some of her competitors that the political newcomer would win financial support from only a short list of wealthy friends giving the maximum $400 allowable in a ward council race.

"I just cast the net as widely as I could in terms of potential supporters," said Janney, who has raised funds for such organizations as Wider Opportunities for Women, Vassar College and Planned Parenthood. " . . . I wrote specialized letters in the different circles in which I have worked professionally. And there is no substitute for your Christmas card list."

Mark Plotkin, another candidate for the ward seat, said Janney's fund-raising experience had probably worked to her advantage. "I applaud her efforts . . . but I don't think financial support is always translated into political support," he said.

Barry's fund-raising efforts have brought in $510,210, halfway to the campaign's $1 million goal, according to campaign chairman Max Berry, who added that contributions picked up sharply after the mayor announced his reelection bid May 17.

Barry raised $1.3 million during his 1983 mayoral campaign, when he faced a far tougher field of Democratic challengers.

Berry defended the pattern of giving through multiple corporate entities as a commonplace phenomenon in politics around the nation.

"To change [the law] so that all related parties can only give $2,000 would make the District's financial laws different from other jurisdictions," he said.

"In a big-city mayor's race when there is not stiff competition, a million dollars sounds like a lot of money, but compared to other large eastern cities it is not," he added.

The records of Barry campaign contributions show that law and investment firms also were heavy donors. The law firm of Wilkes, Artis, Hedrick & Lane contributed $2,000 during the previous filing period of January and February, and in the past three months at least four attorneys with the firm made individual contributions.

Among them was Norman Glascow Jr., who has represented the Donohoe Cos. in that development firm's efforts to build an office and retail complex at 4000 Wisconsin Ave. NW over the protests of neighborhood activists. The Donohoe Cos. also gave $2,000 to the mayor.

In the investment field, the firm of Lazard Freres & Co., which has served as the city's financial adviser in the bond market, appeared frequently on the list of contributors.

At least three individuals employed by the firm contributed $1,000 each, and a political action committee listed by the firm chipped in an additional $2,000.