Comarnic (Romanian pronunciation: [koˈmarnik]) is a town in Prahova County, Muntenia, Romania, with a population of 11,106 as of 2021. Four villages are administered by the town: Ghioșești, Podu Lung, Poiana, and Posada.

The town is situated along the Prahova River, in the main on the left bank, but with some of the component villages on the right bank of the river.

Cormarnic has one sister city:

• Anacortes, USA

Climate

Comarnic has a humid continental climate (Cfb in the Köppen climate classification).

Historical population

Year	Pop.	±%
1977	13,703	—
1992	13,762	+0.4%
2002	13,532	−1.7%
2011	11,732	−13.3%
2021	11,106	−5.3%
Source: Census data

Etymology

Its name origin is the Romanian word "comarnic" for a kind of a shepherd's hut, of Slavic origin: komar=mosquito+ -nik, literally, "retreat from mosquitoes". It is used for milking sheep and storing milk and other dairy products.

Natives

• Corina Drăgan-Terecoasa (born 1971), luger
• Constantin Dragomir (born 1927), bobsledder
• Georgeta Năpăruș (1930–1997), painter
• Ion Panțuru (1934–2016), bobsledder
• David Popescu (1886–1955), general in World War II and Interior Minister

• 
  Summer in Comarnic, from the DN1 street bridge
• 
  Railway line in Comarnic, towards Posada
• 
  Bibescu Castle, Posada