|Born||11 March 1951|
|Grand Slam Singles results|
|French Open||1R (1971)|
|US Open||1R (1970)|
Wijono appeared in two Grand Slam tournaments during his career, the 1970 US Open, where he was beaten in the first round by Pancho Segura and the 1971 French Open, where he also lost in the opening round, to François Jauffret.
From 1969 to 1982, Wijono was a regular fixture in the Indonesia Davis Cup team. He twice beat Indian Anand Amritraj and also had a win over Australian John Cooper. His overall Davis Cup record is 13/25, with eight singles wins and five doubles victories.