- 一号木杆 yīhàomùgān driverdriver (golf club)
- 一号电池 yīhàodiànchí D batteryD size battery
- 上一号 shàngyīhào urinateto go pee; to go to the bathroom (colloquial)
- 天问一号 Tiānwèn Yīhào Tianwen-1Tianwen-1, Chinese mission to put a robotic rover on Mars launched in 2020
- 空军一号 Kōngjūn Yīhào Air Force OneAir Force One, US presidential jet