He will join as interim chief media and comms officer in September, following the departure of Ceri Edwards to The Institute of Fundraising.
Odling-Smee takes on the role having been interim head of comms at Community Service Volunteers.
He will start his new role in October.
Odling-Smee has also worked as head of comms at the Local Government Information Unit.
As part of its work, London Councils lobbies the Government on behalf of the 33 local authorities that it represents.
A London Councils spokesman said: 'We are looking forward to welcoming James to the team.'