Jair Antonio Meneguelli (born 16 July 1947) is a Brazilian politician and former trade union leader.

Born in São Caetano do Sul, Meneguelli studied at the Colégio Barão do Rio Branco before becoming a toolmaker.

In 1977, he joined the Metalworkers' Union of São Bernardo do Campo and Diadema, and the following year he took part in a major campaign for wage increases.

[1] In 1981, Meneguelli became president of the Metalworkers' Union, after Lula had been removed from office by the government.

The CUT played a leading role in increasing industrial action, culminating in the 1986 general strike.