22 182 compressed liquid density data and 98 vapor-phase PvT data for cis-1,3,3,3-tetrafluoroprop-1-ene (R1234ze(Z)) are presented. The compressed liquid density data are for nine isotherms evenly spaced approximately from 283 K to 363 K for pressures from close to saturation to 35 MPa, and the vapor-phase PvT data are for seven isochores for temperatures approximately from 303 K to 375 K for pressures approximately from 82 kPa to 436 kPa. In addition, a saturated liquid density correlation, a Tait correlation for the compressed liquid density data, and a Martin-Hou equation of state for the vapor-phase PvT data are presented.Keywords cis-1,3,3,3-Tetrafluoroprop-1-ene · CF 3 CH=CHF · CAS number 29118-25-0 · Martin-Hou equation of state · PvT behavior · Saturated liquid density · Subcooled liquid density · Tait correlation · Vapor phase Electronic supplementary material The online version of this article (