Maurício Sirotsky Sobrinho (June 5, 1925 – March 24, 1986) was a Brazilian businessman and journalist.

Founder of Grupo RBS (Rede Brasil Sul), Maurício was succeeded as president of the company by his younger brother, Jayme Sirotsky, in 1986; in 1991, the command of the company passed to Maurício's son, Nelson Pacheco Sirotsky; and, in 2012, grandson Eduardo Sirotsky Melzer became the new president of Grupo RBS.

[1] In 1967, he created TV Caxias, forming the first regional TV network in Brazil, and also Rádio Atlântida, the first youth radio station in Brazil, in honor of Jovem Guarda and Atlântida-Sul beach, on the north coast of Rio Grande do Sul.

In 1964, Ary de Carvalho, from the extinct Rio Grande do Sul branch of the newspaper Última Hora, created and modernized the journal Zero Hora, with the construction of the current building on Avenida Ipiranga, inaugurated in May 1969, together with the acquisition of a new printer.

The investment was so high that Ary de Carvalho entered a financial crisis.