Frumosu (German: Frumossa) is a commune in Suceava County, in the historical region of Bukovina, northeastern Romania.

It consists of three villages: Deia, Dragoșa, and Frumosu.

Moldavia (1388–1775) Habsburg Monarchy (1775–1804) Austrian Empire (1804–1867) Austria-Hungary, Cisleithania (1867–1918) Kingdom of Romania (1918–1947) Romanian People's Republic (1947–1965) Socialist Republic of Romania (1965–1989) Romania (1989–present) Part of the historical region of Bukovina, Frumosu was under Habsburg and Austrian rule (being part of the Duchy of Bukovina, Cisleithania) until 1918 when it became part of the Kingdom of Romania.

At the 1930 Romanian census, the Bukovina Germans in Frumosu accounted for 3.1% of the population of the commune, being the second largest ethnic group after the Romanian majority.

The commune's current local council has the following political composition, according to the results of the 2020 Romanian local elections:[2]