Pinyahan, sometimes spelled Piñahan, is a barangay of Quezon City, the Philippines.

Pinyahan means "a place where pineapple is grown" in Tagalog.

Prior to its subdivision by the People's Homesite and Housing Corporation, the land which occupies present-day Pinyahan was a popular place for cultivating pineapples since the 1930s, thus the name of the barangay.

[4] Barangay Pinyahan was previously part of Central District Diliman.

[2] The barangay is also the main mailing address of the Free Legal Assistance Group (FLAG), which is the largest and most prestigious human rights legal network in the country.