Tan Lian Ann (born 8 September 1947) is a Singapore chess master.
He played at Perth 1962/63 (AUS-ch, John Purdy won); at Vrnjačka Banja 1963 (7th World Junior Chess Championship (U-20), Florin Gheorghiu won), and at Barcelona 1965 (9th WJCh, q-5, Robert Hübner won).
He was six times Singapore Champion, and shared first at Hong Kong 1972 (East Asian Zonal); tied for 16-18th at Petropolis 1973 (Interzonal, Henrique Mecking won); took 2nd, behind Eugenio Torre, at Melbourne 1975 (Zonal); tied for 18-20th at Manila 1976 (Interzonal, Mecking won).
Tan Lian Ann represented Singapore four times in Chess Olympiads:In 1968, at first board in 18th Chess Olympiad in Lugano (+8 –3 =3);
In 1970, at first board in 19th Chess Olympiad in Siegen (+7 –4 =7);
In 1972, at first board in 20th Chess Olympiad in Skopje (+11 –3 =5);
In 1992, at third board in 30th Chess Olympiad in Manila (+5 –3 =4).
and twice in Asian Team Chess Championships:In 1987, at first board in 7th ATCh in Singapore (+4 –1 =2);
In 1991, at second board in 9th ATCh in Penang (+1 –1 =1).
He took 8th in the 21st Cairnhill Open at Singapore 2003 (Tu Hoang Thai won).
Awarded the International Master title in 1973, after qualifying for the Interzonal in Petrópolis, Brazil.