is the opening stanza of a Japanese orthodox collaborative linked poem, renga, or of its later derivative, renku (haikai no renga). From the time of Matsuo Basho (1644–1694), the hokku began to appear as an independent poem, and was also incorporated in haibun (in combination with prose). In the late 19th century, Masaoka Shiki (1867–1902), renamed the stand-alone hokku to haiku, and the latter term is now generally applied retrospectively to all hokku appearing independently of renku or renga, irrespective of when they were written. The term hokku continues to be used in its original sense, as the opening verse of a linked poem.

is the opening stanza of a Japanese orthodox collaborative linked poem, renga, or of its later derivative, renku (haikai no renga). From the time of Matsuo Basho (1644–1694), the hokku began to appear as an independent poem, and was also incorporated in haibun (in combination with prose). In the late 19th century, Masaoka Shiki (1867–1902), renamed the stand-alone hokku to haiku, and the latter term is now generally applied retrospectively to all hokku appearing independently of renku or renga, irrespective of when they were written. The term hokku continues to be used in its original sense, as the opening verse of a linked poem.