Alexander Alan Budikusuma Wiratama (born 29 March 1968, as Goei Djien Phang; Chinese: ???) is a former Indonesian badminton player who excelled at the world level from the late 1980s to the mid-1990s.
In 1991 he was runner-up to China's Zhao Jianhua at the IBF World Championships in Copenhagen.
He won the 1992 Olympic men's singles gold medal at Barcelona, defeating fellow countryman Ardy Wiranata in the final.
A crowd estimated at 500,000 to one million Indonesians lined the streets of Jakarta when Susi Susanti and Alan Budikusuma came home in August 1992 and received a two-hour parade.Among his titles, all in singles, are the Thailand Open (1989, 1991), China Open (1991), German Open (1992), Indonesian Open (1993), World Cup (1993), and Malaysian Open (1995).
Budikusuma was a member of world champion Indonesian Thomas Cup teams in 1994.