Teo Ser Luck (Chinese: 张思乐; pinyin: Zhāng Sīlè; Pe̍h-ōe-jī: Tiuⁿ Su-lo̍k; Teochew pronunciation in Tâi-lô: Tionn Sir-la̍k; born 8 June 1968) is a Singaporean former politician who served as Minister of State for Manpower between 2015 and 2017, Minister of State for Trade and Industry between 2011 and 2015 and Mayor of North East District between 2009 and 2017.

After working at Nike Singapore and Coopers & Lybrand, Teo served as a Vice-President and Managing Director at Menlo Worldwide from 1995 to 2005.

Teo was recognised as a "Young Global Leader" by the World Economic Forum in 2007 for his contributions to the business and community services sectors.

Following his election, Teo was appointed a Parliamentary Secretary at the Ministry of Community Development, Youth and Sports (MCYS).

Teo stepped down as Mayor on 26 May 2017 when his term ended and also relinquished his appointment as Minister of State on 30 June 2017 as he had planned to return to the private sector.