2nd Cavalry Regiment

2nd Cavalry Regiment may refer to:
 * Australian 2nd Cavalry Regiment
 * 2nd Madras Cavalry
 * 2nd Cavalry Regiment (United States)
 * 2nd Regiment of Cavalry, Massachusetts Volunteers
 * 2nd Regiment Indiana Cavalry
 * 2nd Regiment Illinois Volunteer Cavalry
 * 2nd Regiment Iowa Volunteer Cavalry
 * 2nd Maryland Cavalry, CSA
 * 2nd Regiment Wisconsin Volunteer Cavalry
 * 2nd Regiment Alabama Volunteer Cavalry (Confederate)
 * 2nd Michigan Volunteer Cavalry Regiment
 * 2nd Minnesota Volunteer Cavalry Regiment
 * 2nd West Virginia Volunteer Cavalry Regiment
 * 2nd Regiment of Cavalry (Canada), later renamed and amalgamated with other units to form the 2nd/10th Dragoons