Mosgiel is an urban satellite of Dunedin in Otago, New Zealand, fifteen kilometres west of the city's centre. Since the re-organisation of New Zealand local government in 1989 it has been inside the Dunedin City Council area. Mosgiel has a population of approximately 14,800 as of June 2023. A nickname for Mosgiel is "The pearl of the plain". Its low-lying nature does pose problems, making it prone to flooding after heavy rains. Mosgiel takes its name from Mossgiel Farm, Ayrshire, the farm of the poet Robert Burns, the uncle of the co-founder in 1848 of the Otago settlement, the Reverend Thomas Burns.

Otago is a region of New Zealand located in the southern half of the South Island administered by the Otago Regional Council. It has an area of approximately 32,000 square kilometres (12,000 sq mi), making it the country's second largest local government region. Its population was 254,600 in June 2023.