Macdonald, Meredith and Aberdeen Additional is a township in Algoma District, Ontario, Canada.

The township encompasses the unincorporated communities of Echo Bay, Bar River and Sylvan Valley.

Bar River is a small hamlet straddling the boundary between the townships of Macdonald, Meredith and Aberdeen Additional and Laird.

The community is home to a big loonie, similar to the Big Nickel in Sudbury, around 260 kilometres (160 mi) eastward.

Robert-Ralph Carmichael, one of the Canadian dollar coin's designers, lived near Echo Bay.