The vapor pressure of 2-chloro-3,3,3-trifluorpropene (HCFO-1233xf) was measured in the temperature range from (263 to 373) K and at pressure between (43 and 1139) kPa. The experimental data including 99 points were collected, and were correlated by the Antoine equation. The absolute deviation and relative deviation were less than +/- 0.5 kPa and +/- 0.5 %, respectively. The results were also fitted by the Wagner equation.