Z100 may refer to:
American radio stations known as Z100 KKRZ in Portland, Oregon KZOQ-FM in Missoula, Montana KZRO in Mount Shasta, California WBIZ-FM in Eau Claire, Wisconsin WHTZ in Newark, New Jersey WJZR, now WRFX, in Kannapolis/Charlotte, North Carolina, known as Z100 from August 1983 until late 1985 WZRA, now WEAN-FM, in Wakefield-Peacedale, Rhode Island KLRZ in New Orleans, Louisiana, known as Z-100 in the 1990s WZZF, now WVVR in Hopkinsville, Kentucky, known as Z-100 from 1986 until 1990
Other uses Zenith Z-100, an early microcomputer Sendo Z100, a mobile phone model Z100, a Shanghai–Kowloon through train
See also Zenair CH 100