Sowney, also Souny, Sowny, Sauny, is a secondary name for a number of Cork surnames.

A group of related men particularly around Drimoleague named McCarthy used the name Sowney.

Sowney is a name for Brien around Ardfield and Rathbarry.

Sowney has been spotted as a secondary name for Collins around Ross and Kilkerranmore.

In some areas Souny and Souney can be confused with Louny and Louney (Looney, maybe O'Sullivan Looney) due to the resemblance between handwritten capital letters L and S in old records. Also, Swiney (Sweeney) can be mistakenly transcribed as Sowney.

See the primary surnames for details and examples from historical records.