Krystyna Hołuj-Radzikowska (5 February 1931, Lwów – 29 November 2006) was a Polish chess Woman Grandmaster (WGM). She was nine times Polish Champion (1951, 1952, 1953, 1955, 1956, 1957, 1959, 1966, and 1969).

Krystyna tied for 15–16th at the Moscow 1955 Candidates Tournament which was won by Olga Rubtsova. She tied for 7–8th at the Ohrid 1971 Candidates Tournament won by Nana Alexandria.

She played for Poland five times in the Women's Chess Olympiads:

• in 1957, at 1st board in the 1st WChOlympiad in Emmen (+9 −2 =0);
• in 1963, at 2nd board in the 2nd WChOlympiad in Split (+2 −4 =2);
• in 1966, at 1st board in the 3rd WChOlympiad in Oberhausen (+3 −6 =2);
• in 1969, at 1st board in the 4th WChOlympiad in Lublin (+3 −3 =4);
• in 1972, at 1st board in the 5th WChOlympiad in Skopje (+5 −1 =3).

Krystyna won two individual medals: gold (Emmen 1957) and bronze (Skopje 1972). She was awarded the Woman International Master (WIM) title in 1955 and the WGM title in 1984.