A refrigerator may include a compressor with a reciprocating member to compress or expand a working gas by undergoing reciprocating movement, and a leaf spring unit to support the reciprocating member. The leaf spring unit includes a leaf spring having a first rim fixed to a compressor body, a first hub arranged on an inner side of the first rim and mounted on the reciprocating member and a resilient arm part movably supporting the first hub with respect to the first rim, and an auxiliary spring having a second rim fixed to the compressor body, a second hub arranged on an inner side of the second rim and mounted on the reciprocating member and a pair of auxiliary spring parts supported in a form of cantilever on the second rim and the second hub. The leaf spring is arranged between the pair of auxiliary spring parts, and the pair of auxiliary spring parts opposes the resilient arm part.