James Tien Pei-chun, GBS, OBE, JP (Chinese: 田北俊; born 8 January 1947) is the former chairman and Leader of the Liberal Party (LP) and former member of the Legislative Council of Hong Kong (Legco).

His popularity rose to peak when he resigned from the ExCo in 2003 in opposition to the Basic Law Article 23 which brought down the proposed legislation.

He ran a successful campaign in the 2004 LegCo geographical constituency direct election but was defeated in 2008 and resigned from his party offices.

His father, Francis Tien, was a successful clothing merchant, owning textile factories in Hong Kong and was appointed member of the Legislative Council and many consultative bodies for the colonial government in the 1960s and 70s.

He traveled to the United States to study chemical engineering at the University of Illinois at Urbana–Champaign when he was 17 years old and met his wife Mary, a Vietnamese-Chinese, in college.

[citation needed] In the first SAR Legislative Council election in 1998, he ran in the Commercial (First) functional constituency representing Hong Kong General Chamber of Commerce's approximately 4,000 members.

His resignation ultimately led to the withdrawal of the legislation and break-up of the "ruling alliance" of the Chief Executive, causing his popularity and that of the Liberal Party to surge.

In September, Tien went back on his previous undertaking and successfully re-claimed the New Territories East seat in the 2012 Legislative Council elections.

In the 2017 Chief Executive election, Tien again went against the tide, to support John Tsang whose candidacy was widely considered to be opposed by the Beijing government.

[citation needed] After the 2019 Yuen Long attack, James Tien called for the resignation of Carrie Lam as Chief Executive for Hong Kong.

[9] In 2020, Tien announced the formation of a new political group along with other members of the Liberal Party called Hope for Hong Kong.

Tien stated that the group would aim to explore a moderate middle ground between the pro-Beijing and pro-democracy camps after accusing the Liberal Party's leadership of growing too close to Beijing.

Tien made clear that he was personally infuriated by Chow's unfriendly act despite the Liberal Party's loyalty and consistent support for the rail company.