Twemco is a manufacturer of flip clocks from Hong Kong, China.

The factory shop is located in the Prince Edward area.

[2] Twemco is the world's leading manufacturer of automatic flip clocks and its products became a symbol of Hong Kong precision engineering during the mid-20th century.

[6] In Hong Kong, Twemco clocks are a fixture in banks, government buildings and offices.

[4] This has led the clocks to become associated with the film aesthetic of Hong Kong director Wong Kar Wai.