Siku
Siku may refer to:

Siku (instrument), a kind of pan flute from the Andes
Siku (Bolivia), a mountain in the Bolivian Andes
Siku Toys, a German brand of toy vehicles
Siku (comics), an artist
Siku (polar bear), a bear cub who became an overnight online sensation
Siku Quanshu, a compendium of Chinese literature completed in 1782
Secoo, Chinese online retailer
Siku Allooloo, indigenous writer
Siku Ya Bibi (Day of the Lady)
Siku Njema, a Swahili novel