Chiu Sin Hang (Chinese: 趙善恆; born 11 March 1984) is a Hong Kong singer-songwriter, film director and actor.

[3] Chiu transferred to the School of Film and Television of the Hong Kong Academy of Performing Arts a year later and majored in sound system design.

[2][4] He also began directing short films in his freshman year at HKAPA and befriended Anthony Yan [zh-yue], his future frequent collaborator, while working on a project for a directorial course.

[2] Chiu formed the rock band ToNick [zh] alongside his PolyU friends Chan, Su, and Yip after watching a concert by Mayday in the same year.

[8] Although the film was not able to be released in China due to censorship, it was positively received in Hong Kong and grossed over HK$6 million at the local box office.

[13] In 2023, Chiu made his television directorial debut with the ViuTV drama series Beyond the Common Ground [zh], while also taking on the lead role as Yip Chi Fan, a former barrister who became disillusioned with the corruption and manipulation of the law in the legal system, starring alongside Ivy So and Vincent Kok.