Paddington Substation is a heritage-listed electrical substation built in 1926 and located at 1 Young Street, Paddington in the Municipality of Woollahra local government area of New South Wales, Australia. It is also known as Substation #342 Paddington 33Kv Zone. The property is owned by Ausgrid, an agency of the Government of New South Wales. It was added to the New South Wales State Heritage Register on 2 April 1999.