The piri is a Korean double reed instrument, used in both the folk and classical (court) music of Korea. It is made of bamboo. Its large reed and cylindrical bore gives it a sound mellower than that of many other types of oboe.

There are four types of piri:

Piri is thought to have been introduced to Korea from a country bordering west of China before Goguryeo period. According to Suseo (수서; 隋書), piri was also known as gagwan (가관; 笳管), and it originates from Kucha. During the reign of King Yejong of Goryeo dynasty, another double-reed cylindrical instrument was imported from Song dynasty China, and to disambiguate, the former was named hyang piri and the latter dang piri. Se piri is smaller than hyang piri but has the same structure and range. Se piri appears to be invented much later than hyang piri.

The piri's equivalent in China is the guan (also known as bili), and its counterpart in Japan is the hichiriki.