Hammerton's Ferry is a pedestrian and cycle ferry service crossing the River Thames in the London Borough of Richmond upon Thames.

It links the northern bank near Marble Hill House in Twickenham with the southern bank near Ham House in Ham, and is one of only four remaining ferry routes in London not replaced by a bridge or tunnel. The service has operated since 1908 and is family run.

The ferry departs from a floating boathouse on the north bank; on the south bank, a jetty serves at high tide and embankment stairs at low tide. In addition to the crossing, rowing boats, canoes, and motorboats are available for hire.

The ferry operates on weekends year-round and on weekdays between February and October, weather permitting.