Tranquility is an unincorporated community in Adams County, in the U.S. state of Ohio.
Tranquility had its start in the 1830s when a country store opened there. A post office was established at Tranquility in 1848, and remained in operation until 1912.
38°57′45″N 83°31′59″W / 38.96250°N 83.53306°W