The Portsmouth Lillies minor league baseball team played in Portsmouth, New Hampshire, for part of one season in 1888. The Lillies replaced a team from Portland, Maine, on July 20, 1888. They played in the New England League, which was a group of minor league baseball teams from 1886 to 1949.

The Lillies were managed to a record of 12 wins and 20 losses by Frank Leonard.^{[citation needed]}