T800

T800 may refer to:


 * Avco/Pratt & Whitney T800, a turboshaft engine which lost to the LHTEC T800
 * INMOS T800, a 1980s transputer chip
 * LHTEC T800, a turboshaft engine for rotary wing applications
 * T-800, a fictional android frequently described as a cyborg, from the Terminator series