Below are some of the clients which  O'Malley Communications Inc. has served

AECL Ltd.
Atlantic Canada Opportunities Agency
Canada Information Office
Canada Post Corporation
Canadian Construction Association
Canadian Wildlife Federation
Canadian Nuclear Association
Canadian Association for Adult Education
Comcor Engineering
Consumer and Corporate Affairs Canada
Electrical Equipment Manufacturers Association
Energy Pathways Inc.
Environment Canada
Export Development Corporation
External Affairs Canada
Federal Information Highway Advisory Council
Federal Task Force on Comprehensive Claims
Federal Task Force on Broadcasting Policy
Finance Canada
Fisheries and Oceans Canada
Fisheries Council of Canada
Forestry Canada
Friends of Canadian Broadcasting
Fur Institute of Canada
Government of the Bahamas
Grocery Products Manufacturers of Canada
Health Canada
Indian and Northern Affairs Canada
Industry and Science Canada
Laidlaw Transit Inc.
Metropolitan Life Insurance Company
Molson Breweries Limited
National Capital Commission
National Sea Products
Ontario Native Affairs Secretariat
Ontario Hydro
Ontario Ministry For the Greater Toronto Area
Ottawa Macdonald-Cartier International
Airport Authority
Ottawa Restaurant Association
Patented Medicines Prices Review Board
Privy Council Office
Public Works and Government Services Canada
R. Cave and Associates Engineering
Regional Municipality of Ottawa-Carleton
Royal Commission on Unemployment Insurance
Scotia Coal Synfuels Limited
Secretary of State for Canada
Sports Council of Canada
Treasury Board Canada
Transport Canada
UN International Year of the Family
UN 50th Anniversary Canada Committee
Wildlife Habitat Canada
World Health Organization