LS1

LS1 may refer to:
 * Central Leeds postcode
 * GM LS engine
 * MACS J1149 Lensed Star 1 - most distant star detected, sometimes abbreviated to LS1
 * Nexaer LS1, American light-sport aircraft
 * Rolladen-Schneider LS1 glider
 * Landsat 1, satellite abbreviated to LS-1
 * 724