Elections to the Metropolitan Borough of Southwark were held on Monday 2 November 1925.
[1] The borough council had sixty councillors, all of whom were elected together at triennial elections.
The borough was divided into ten wards which returned between 3 and 9 members.
In addition to the councillors, the council also included aldermen.
Aldermen had a six-year term of office, with 5 seats being filled every three years at the first council meeting after each election.