A cargo label of the USS Mayflower
The USS Mayflower was a Federation starship in operation during the late 24th century.
During the early 2370s, Deep Space 9 would occasionally receive and store cargo containers in its cargo bay that originated from the Mayflower. (DS9: "Family Business", "Indiscretion", "Sons of Mogh", "Nor the Battle to the Strong", "Who Mourns for Morn?")
This ship's name was not mentioned on screen, however, graphics displaying its name appeared on several of said cargo containers in these episodes. These graphics later appeared in the second edition of the Star Trek Encyclopedia.
This starship may have been named after the ship which ferried the Pilgrims to Massachusetts in 1621.