Thomson

• Tomson, Thompson, Tompson, Thomason, Thomasson

From Tom +‎ -son, originally meaning "son of Thomas". Being derived from Thomas ultimately gives this surname an Aramaic derivation - teoma 'twin'.

• Calque of Scottish Gaelic MacTamhais (“MacTavish”); Also an anglicisation of the Gaelic name MacTamhais, meaning "son of Thomas". Many with the name MacTavish changed their name to Thomson and Thompson after Culloden.

Thomson (countable and uncountable, plural Thomsons)

1. (countable) A British surname transferred from the given name.
   1. A Scottish surname from Scottish Gaelic.
2. A city, the county seat of McDuffie County, Georgia, United States.