The 1986 Atlantic Conference baseball tournament was held from May 9 through 11, 1986 to determine the champion of the NCAA Division I the Atlantic 10 Conference, for the 1986 NCAA Division I baseball season. This was the eighth iteration of the event, and was held on the campus of Rutgers in Piscataway, New Jersey. Rutgers won their second championship and earned the conference's automatic bid to the 1986 NCAA Division I Baseball Tournament.