Maghera (Machaire Rátha in Irish) is a town in County Derry in Northern Ireland. Its population was 2,876 in 1991.

Notable buildings in Maghera include St. Lurach's Church, which was founded in the year 500 AD. The town of Maghera grew up around this church.

Maghera is the birthplace of Charles Thomson, who emigrated to the United States where he became secretary of the Continental Congress. Thomson designed the Great Seal of the United States.

Another famous person born in Maghera who later moved to the United States is the children's author Eve Bunting.

See also: List of towns in Northern Ireland