9th Regiment of Horse

9th Regiment of Horse or 9th Horse may refer to:


 * 7th Dragoon Guards, ranked as 9th Horse from 1690 to 1694
 * Montagu's Carabineers (raised by John Montagu, 2nd Duke of Montagu), ranked as 9th Horse from 1745 to 1746
 * 9th Deccan Horse