Lazzaro Opizio Pallavicini or Pallavicino (30 October 1719 – 23 February 1785) was a cardinal of the Catholic Church starting in 26 September 1766.
He was the nephew of Cardinal Lazzaro Pallavicino (1602-1680).
In 1769, Pope Clement XIV named him Secretary of State.
He participated in the papal conclaves of 1769, 1774, and 1775.
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