Dundee is a town in Polk County, Florida, United States. The population was 5,235 at the 2020 census. It is part of the Lakeland–Winter Haven Metropolitan Statistical Area.

A post office called Dundee has been in operation since 1912. The town was named after Dundee, in Scotland. Dundee was first settled in 1911, and incorporated as a town in 1925. On April 2, 2024, the town held a referendum on whether it should adopt city status. 68% voted for Dundee to remain a town, compared to 32% voting in favour of being a city.

According to the United States Census Bureau, the town has a total area of 4.3 square miles (11 km²), of which 3.9 square miles (10 km²) is land and 0.4 square miles (1.0 km²) (8.82%) is water.

Dundee is located in the humid subtropical climate zone under (Köppen climate classification: Cfa).

As of the 2020 census, Dundee had a population of 5,235. The median age was 38.4 years. 24.6% of residents were under the age of 18 and 16.9% of residents were 65 years of age or older. For every 100 females there were 95.6 males, and for every 100 females age 18 and over there were 93.4 males age 18 and over.

92.3% of residents lived in urban areas, while 7.7% lived in rural areas.

There were 1,853 households in Dundee, of which 37.3% had children under the age of 18 living in them. Of all households, 48.6% were married-couple households, 18.3% were households with a male householder and no spouse or partner present, and 26.8% were households with a female householder and no spouse or partner present. About 22.4% of all households were made up of individuals and 10.4% had someone living alone who was 65 years of age or older.

There were 2,242 housing units, of which 17.4% were vacant. The homeowner vacancy rate was 4.2% and the rental vacancy rate was 14.5%.