Lupoglav (Italian: Lupogliano) is a village and municipality in Istria, Croatia.

The Lupoglav Municipality is situated on the northeast of the Istrian Region. To the east it borders with the Primorsko-Goranska County and with the Istrian municipalities of Lanišće and Cerovlje and the City of Buzet. The municipality is crossed by the arterial roads that connect the Istrian region with the rest of Croatia – the Istrian Y and the tunnel of Učka. The municipality has a surface area of 92.19 km, i.e. it accounts for 3.27% of the territory of the Istrian Region.

The Castle Mahrenfels which belonged to the family Herberstein and later to the counts Brigido is situated over the village.

Demographics

According to the 2021 census, its population was 836, with 298 living in the village proper. The village population was 288 in 2011, with a total of 924 in the municipality (2011).

The settlements in the municipality are as follows:

• Boljun, population 82
• Boljunsko Polje, population 162
• Brest pod Učkom, population 55
• Dolenja Vas, population 70
• Lesišćina, population 75
• Lupoglav, population 288
• Semić, population 94
• Vranja, population 98