Kanna may refer to:

• Mesembryanthemum tortuosum, syn. Sceletium tortuosum, a Southern African succulent with psychoactive properties
• Platysace cirrosa, a Western Australian perennial herb
• Caroxylon aphyllum, a shrub

• Kanna (era), a Japanese name for the years 985–987
• Kanna or Japanese plane, a wood working tool

• Kanna (film), a 2007 Indian movie
• Kanna Kamui, a main character from the Japanese anime/manga Miss Kobayashi's Dragon Maid

• Kanna (given name), a feminine Japanese given name
• Yonadam Kanna (born 1951), president of the Assyrian Democratic Movement and member of the Iraqi Parliament

• Kanna (Lycaonia), ancient town now in Turkey
• Kanna, Gunma, a town in Gunma Prefecture, Japan
• Kanna, Poland, a village in southern Poland

• Kannas (disambiguation)
• Kana (disambiguation)
• Canna (disambiguation)