| Honorific-Prefix: | Yang Berhormat Tuan |
| Lee Khai Loon | |
| Honorific-Suffix: | MLA |
| Birth Name: | Lee Khai Loon |
| Birth Date: | 29 March 1978 |
| Birth Place: | Bukit Mertajam, Penang, Malaysia |
| Citizenship: | Malaysian |
| Nationality: | Malaysia |
| Constituency Am: | Machang Bubuk |
| Assembly: | Penang State Legislative |
| Term Start: | 5 May 2013 |
| Predecessor: | Tan Hock Leong (PR–PKR) |
| Majority: | 11,900 (2013) 16,747 (2018) 15,922 (2023) |
| Party: | People's Justice Party (PKR) |
| Otherparty: | Pakatan Rakyat (PR) Pakatan Harapan (PH) |
| Occupation: | Politician |
Lee Khai Loon (born 29 March 1978)[1] is a Malaysian politician who has served as Member of the Penang State Legislative Assembly (MLA) for Machang Bubuk since May 2013. He is a member and Division Chief of Bukit Mertajam of the People's Justice Party (PKR), a component of the Pakatan Harapan (PH) and formerly Pakatan Rakyat (PR) coalitions.
| Constituency | Candidate | Votes | Pct | Opponent(s) | Votes | Pct | Ballots cast | Majority | Turnout | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2013 | N14 Machang Bubok | Lee Khai Loon (PKR) | 19,080 | 70.68% | Tan Lok Heah (Gerakan) | 7,180 | 26.60% | 27,465 | 11,900 | 89.26% | ||||
| Wan Balkis Wan Abdullah (IND) | 252 | 0.93% | ||||||||||||
| Tan Hock Leong (IND) | 172 | 0.64% | ||||||||||||
| bgcolor= | Vikneswaran Muniandy (KITA) | 159 | 0.59% | |||||||||||
| Ooi Suan Hoe (IND) | 152 | 0.56% | ||||||||||||
| 2018 | N14 Machang Bubuk | Lee Khai Loon (PKR) | 21,819 | 68.98% | Md Jamil Abd Rahman (PAS) | 5,072 | 16.04% | 32,138 | 16,747 | 86.25% | ||||
| Tan Teik Cheng (MCA) | 4,658 | 14.73% | ||||||||||||
| bgcolor= | Teng Ah Ba (PRM) | 53 | 0.17% | |||||||||||
| bgcolor= | Lim Jhun Hou (MUP) | 28 | 0.09% | |||||||||||
| 2023 | Lee Khai Loon (PKR) | 28,777 | 69.12% | bgcolor= | Tan Hum Wei (GERAKAN) | 12,855 | 30.88% | 41,897 | 15,922 | 74.10% | ||||