Baden is a suburban community and unincorporated place in Township of Wilmot, Regional Municipality of Waterloo in Southwestern Ontario, Canada. It was named after Baden-Baden, Germany; the approximate population as of 2015, as per township statistics, is 4,940.

Area codes 519, 226, 548, and 382 are overlay telephone area codes in the North American Numbering Plan (NANP) for most of southwestern Ontario.