St Martin-by-Looe

St Martin-by-Looe (Cornish: Penndrumm) is a coastal civil parish in south Cornwall, England, United Kingdom. The parish is immediately east of the town of Looe and 7 miles (11 km) south of Liskeard. The parish takes its name from its parish church of St Martin. The parish historically included East Looe, which was removed from the ecclesiastical parish in 1845 and became a separate civil parish in 1866. Further territory was ceded from the civil parish of St Martin in 1934 to the urban district of Looe, including the parish church and the small adjoining settlement of St Martin. Since 1934, the civil parish has therefore excluded the church and settlement after which it is named, instead just covering the more rural eastern parts of the old parish.

The main hamlets in the civil parish are Millendreath, which is on the coast just east of Looe, and No Man's Land a little way inland. To the north, the parish is bordered by Morval parish, to the east by Deviock parish, to the west by Looe parish and to the south by the English Channel. At the 2021 census the population of the parish was 402.