The present invention provides a process for preparing (7Z)-7-tricosene of the following formula (3): the process comprising a step of subjecting a nucleophilic reagent, (8Z)-8-pentadecenyl compound of the following general formula (1), wherein M1 represents Li, MgZ1, CuZ1 or CuLiZ1, wherein Z1 represents a halogen atom or an (8Z)-8-pentadecenyl group, to a coupling reaction with a 1-halooctane compound of the following general formula (2), wherein X1 represents a halogen atom, to produce (7Z)-7-tricosene (3).