98th Regiment

98th Regiment may refer to:


 * 98th Infantry Regiment (Philippine Commonwealth Army), a unit of the Philippine Commonwealth Army
 * 98th (Prince of Wales's) Regiment of Foot, a unit of the United Kingdom Army
 * 91st Regiment of Foot, a unit of the United Kingdom Army
 * 98th Illinois Volunteer Infantry Regiment, a unit of the Union (Northern) Army during the American Civil War