GFK may refer to:

Transportation

• Grand Forks International Airport, North Dakota, United States

• Grand Forks (Amtrak station), North Dakota, United States

Other uses

• GfK, a German market research organisation

• GFK (band), a Canadian hardcore metal band

• Fiberglass

• Ghostface Killah (born 1970), American rapper

• Patpatar language

• Gazişehir Gaziantep F.K., a football club in Turkey