The City of Harrison maintains four recreational play fields for sports activities, and six parks. The recreation commission operates supervised summer recreation programs. Local groups have youth baseball, football and soccer programs. Miami-Whitewater Forest, operated by the Hamilton County Park Board, adjoins the area and offers golfing, swimming, fishing, camping and horseback riding. Two private golf courses and a swim and tennis club are in the immediate vicinity. Brookville Lake is 20 minutes from Harrison, offering all outdoor recreation plus provisions for boating and sailing.
Harrison has plenty of activities happening throughout the year. During the summer, there are Friday Night Movies, Tuesday Night Concerts and a Fourth of July parade. Residents also enjoy an annual Halloween event and Christmas parade.
The Harrison Senior Center has many programs and social activities. Residents can also exercise with programs including line dancing, walking and general exercise classes.