Mayfield, historically Ballinamought (), is a suburb on the north-side of Cork city, Ireland. Mayfield is part of the Dáil constituency of Cork North-Central.
The area was originally called Baile na mBocht in Irish and Anglicised as "Ballinamought". A number of works, including those of etymologist and historian Patrick Weston Joyce, translate Baile na mBocht as "town of the poor [people]". Other sources translate it as "town of the sick", as the area was reputedly the site of a medieval leper colony. A path leading from the area towards the river, known in Irish as Siúl na Lobhar (literally 'Lepers Walk') is known in English as "Lover's Walk".
Mayfield is 3 km north-east of the city centre. It is bounded to the north by the Glen River Valley, an aquiferous geological formation produced by a receding glacier during the last ice age. Habitats, flora and fauna within the area include the small cudweed and the sand martin, a migratory bird species that returns from North Africa each spring to breed in the porous sand cliffs along sections of the river valley north.