Jose Priscillo G. Diniz (born 12 December 1948) is a Brazilian professional golfer.

He comes from a family which boasts several other professional golfers, including his grandfather, but he did not turn professional himself until the age of 28, having previously been a practicing lawyer.

In his regular (that is under fifty) career, Diniz won several titles on the South American circuit.

In 2000 he was the Rookie of the Year on the European Seniors Tour and finished sixth on that tour's Order of Merit.

He has won two European Seniors Tour events, the 2000 The Daily Telegraph European Seniors Match Play Championship and the 2001 Royal Westmoreland Barbados Open.