This study was performed at Malatya Fruit Research Institute, in order to determine the winter and spring frost resistance of'Hasanbey','Hacihaliloglu','Cataloglu','Soganci'and'Kabaasi'apricot varieties growing in Malatya between 1998-2000. The flower buds of cultivars were exposed to artificial freezing tests for 4, 8 and 16 hours at–10,-15 and–20 ºC during December, January and February. Liveliness ratios were evaluated after two hours freezing at the stages of bud burst (at–5,-10 and–12 ºC), pink cluster (at–4,-7 and–9 ºC), full bloom (at–1,-3 and–4ºC), and post bloom (at–1,-2 and–4 ºC). Frost resistance was found significantly higher in 1999-2000 than 1998-1999. Resistance of cultivars was the highest in January and the lowest in April (at the stage of post bloom). The applications of–20 ºC during winter rest in November, December, January,-7 ºC at pink cluster stage,-4 ºC at full bloom stage and–2 ºC at post bloom stage caused a total (100%) injury in all cultivars. The hardiest cultivars were'Kabaasi','Soganci'and'Hacihalioglu'at the stages of pink cluster, full bloom and post bloom, respectively.