Moacyr Siqueira de Queiroz (18 December 1902 – 14 August 1992), known as Russinho, was a Brazilian footballer who played as a midfielder. He played for Brazil national football team at the 1930 FIFA World Cup finals.
He played club football for Andarahy, Vasco da Gama and Botafogo, winning the Campeonato Carioca in 1924, 1929 and 1934 with Vasco da Gama and in 1935 with Botafogo.