Sakkō (先笄) is a Japanese hairstyle worn by maiko (apprentice geisha). It was also worn in the latter Edo period (1603–1867) and in the Meiji period (1868–1912) by young married women. Maiko wear it before and during the erikae ceremony, which marks their graduation out of apprenticeship.

All hairstyles for maiko will feature a red piece of cloth tied in the front called a Chinkoro (ちんころ), which is a physical representation of their childhood and immaturity. The first hairstyle that a maiko will wear is called Wareshinobu (割れしのぶ) and is characterized by the iconic bun that has a red piece of cloth tied through it to match the chinkoro. The Sakkō is characterized by a myriad of tortoiseshell hair ornaments, a set of silver wires that resemble the wings of a dragonfly, and a tuft of hair that hangs down at the back of the style. A maiko will use her own hair for these elaborate styles and will see a special hairstylist once a week to have it reset. During this time she must sleep on a special pillow known as a Takamakura (高枕) that keeps the hair from falling apart. Traditionally the okaasan of an okiya would sprinkle rice or bran around the takamakura of a new maiko to make sure that she was using the takamakura properly. If the maiko rolled off the pillow then her hair would become covered in grains and she’d have to go to the hairdressers and have the style set all over again.

Before a maiko's ERIKAE, when she'll become GEIKO (Geisha). Her hair ornaments must now be more subtle, though still more daring than those of the GEIKO (Geisha).