Chong Eng (; born on 6 July 1957) is a Malaysian politician who served as Member of the Penang State Executive Council (EXCO) in the Pakatan Rakyat (PR) and Pakatan Harapan (PH) state administration under Chief Ministers Lim Guan Eng and Chow Kon Yeow and Member of the Penang State Legislative Assembly (MLA) for Padang Lalang from May 2013 to August 2023, Member of Parliament (MP) of for Bukit Mertajam from November 1999 to May 2013 and MLA for Batu Lancang from April 1995 to November 1999. She is a member and was the Deputy Secretary-General of the Democratic Action Party (DAP), a component party of the PH and formerly PR, Barisan Alternatif (BA) and Gagasan Rakyat (GR) coalitions. She has served as the Women Advisor of DAP since September 2023. She also served as Women Chief of PH from March to September 2021, Women Chief of DAP from 2000 to September 2023 and Acting Secretary-General of DAP from May to September 2002. She is also Deputy Head and Member of the Standing Order Committee of the Women Parliamentary Caucus. She also served in the Women Crisis Center and Community AIDS Service Penang.
!|Year
!|Constituency
! colspan=2|Candidate
!|Votes
!|Pct
! colspan=2|Opponent(s)
!|Votes
!|Pct
!|Ballots cast
!|Majority
!|Turnout
|-
|rowspan=2|1995
|rowspan=2|N27 Batu Lancang
|rowspan=2 |
|rowspan=2| (DAP)
|rowspan=2 align="right" |7,570
|rowspan=2|49.72%
| |
|Lee Boon Ten (Gerakan)
|align="right" |7,508
|49.31%
|rowspan=2|15,449
|rowspan=2|62
|rowspan=2|76.48%
|-
||
|Tan Ban Yew (PBS)
|align="right" |148
|align="right" |0.97%
|-
|1999
|N13 Berapit
| |
|Chong Eng (DAP)
|align="right" |5,826
|40.90%
| |
| (MCA)
|align="right" |8,420
|59.10%
|14,549
|2,594
|77.60%
|-
|2004
|N16 Perai
| |
|Chong Eng (DAP)
|align="right" |4,477
|46.94%
| |
| (MIC)
|align="right" |5,060
|53.06%
|9,748
|583
|70.57%
|-
|2013
| rowspan="4" |N15 Padang Lalang
| |
| (DAP)
|align="right" |18,657
|83.22%
| |
|Tan Teik Cheng (MCA)
|align="right" |3,727
|16.62%
|22,585
|14,930
|87.43%
|-
| rowspan="3" |2018
| rowspan="3" |
| rowspan="3" | (DAP)
| rowspan="3" align="right" |20,764
| rowspan="3" |88.70%
| |
|Kuan Hin Yeep (MCA)
|align="right" |2,400
|10.20%
| rowspan="3" |23,694
| rowspan="3" |18,364
| rowspan="3" |84.70%
|-
|bgcolor= |
|Lai Yean Nee (PRM)
|align="right" |154
|align="right" |0.70%
|-
|bgcolor= |
|Liew Ee Jin (PFP)
|align="right" |101
|align="right" |0.40%
|}
{| class="wikitable" style="margin:0.5em ; font-size:95%"
|+ Parliament of Malaysia
!|Year
!|Constituency
!colspan=2|Candidate
!|Votes
!|Pct
!colspan=2|Opponent(s)
!|Votes
!|Pct
!|Ballots cast
!|Majority
!|Turnout
|-
|1999
| rowspan="3" |P045 Bukit Mertajam
| |
| (DAP)
|align="right" |26,874
|52.84%
| |
|Tan Chong Keng (MCA)
|align="right" |23,937
|47.06%
|51,967
|2,937
|78.02%
|-
|2004
| |
| (DAP)
|align="right" |26,215
|59.18%
| |
|Ma Kok Ben (MCA)
|align="right" |17,651
|39.85%
|45,442
|8,564
|77.37%
|-
|2008
| |
| (DAP)
|align="right" |37,882
|75.97%
| |
|Ong Tang Chuan (MCA)
|align="right" |11,985
|24.03%
|50,823
|25,897
|79.31%
|}
Honours
- 50px Commander of the Order of the Defender of State (DGPN) – Dato' Seri (2023)