A shirt cuff expander for facilitating the expansion of a shirt cuff. The shirt cuff expander comprises a first and second end connected by a connecting member. The connecting member may be a band-like member having first and second ends and may optionally include an elastic portion. The cuff expander first end may have a button attached to it as its fastening mechanism or another type of obstruction that prevents the extender from slipping through a button-hole. The second end may have, a similar obstruction to prevent slippage through a button-hole or may have a button-hole stitched into its second end. This arrangement allows the first and second ends to be fastened to a button cuff or a link cuff or any other type of shirt cuff. This allows the expander and shirt cuff to transition easily between the traditional closed, first position in which the two ends of the shirt cuff are axially aligned with each other and the open, second position, in which the two ends of the shirt cuff are laterally displaced from one another. This versatility allows for the shirt sleeves to be pushed up or pulled down quickly and easily. The optional elastic portion may also help retain the shirt sleeves in the raised position.