Tainan City legislative districts (Chinese: 臺南市選舉區) consist of 6 single-member constituencies, each represented by a member of the Legislative Yuan. From the 2020 election onwards, the number of Tainan's seats was increased from 5 to 6.^[1]

Current districts

• Tainan City Constituency 1 - Houbi, Baihe, Beimen, Syuejia, Yanshuei, Xinying, Liouying, Dongshan, Jiangjun, Xiaying, Liujia
• Tainan City Constituency 2 - Cigu, Jiali, Madou, Guantian, Shanhua, Danei, Yujing, Nansi, Sigang, Anding, Shanshang, Zuojhen, Nanhua
• Tainan City Constituency 3 - Annan, North
• Tainan City Constituency 4 - Sinshih, Yongkang, Sinhua
• Tainan City Constituency 5 - Anping, South, West Central, East (16 li)
• Tainan City Constituency 6- Rende, Gueiren, Guanmiao, Longci, East (29 li)

Historical districts

2008-2010

• Tainan County Constituency 1 - Houbi, Baihe, Beimen, Syuejia, Yanshuei, Xinying, Liouying, Dongshan, Jiangjun, Xiaying, Liujia, Guantian
• Tainan County Constituency 2 - Cigu, Jiali, Madou, Shanhua, Danei, Yujing, Nansi, Sigang, Anding, Sinshih, Shanshang, Sinhua, Zuojhen, Nanhua
• Tainan County Constituency 3 - Yongkang, Rende, Gueiren, Guanmiao, Longci
• Tainan City Constituency 1 - Annan, North, West Central
• Tainan City Constituency 2 - Anping, East, South

2010-2020

• Tainan City Constituency 1 - Houbi, Baihe, Beimen, Syuejia, Yanshuei, Xinying, Liouying, Dongshan, Jiangjun, Xiaying, Liujia, Guantian
• Tainan City Constituency 2 - Cigu, Jiali, Madou, Shanhua, Danei, Yujing, Nansi, Sigang, Anding, Sinshih, Shanshang, Sinhua, Zuojhen, Nanhua
• Tainan City Constituency 3 - Annan, North, West Central
• Tainan City Constituency 4 - Anping, East, South
• Tainan City Constituency 5 - Yongkang, Rende, Gueiren, Guanmiao, Longci

Legislators

   Democratic Progressive Party

^[1]Huang Wei-cher resigned in 2018 after his election as Tainan City mayor.

^[2]William Lai resigned in 2010 after his election as Tainan City mayor.^[2]

Election results

2019 By-election

2019 Legislative by-election[3]
		Elected			Runner-up
Incumbent	Constituency	Candidate	Party	Votes (%)	Candidate	Party	Votes (%)
DPP Huang Wei-cher	Tainan City Constituency 2	Kuo Kuo-wen	DPP	47.05%	Hsieh Lung-jie	Kuomintang	44.31%

2016

2016 Legislative election[4]
		Elected			Runner-up
Incumbent	Constituency	Candidate	Party	Votes (%)	Candidate	Party	Votes (%)
DPP Yeh Yi-jin	Tainan City Constituency 1	Yeh Yi-jin	DPP	71.22%	Huang Jui-kun (黃瑞坤)	Kuomintang	22.17%
DPP Huang Wei-cher	Tainan City Constituency 2	Huang Wei-cher	DPP	76.47%	Huang Yao-sheng (黃耀盛)	Kuomintang	18.67%
DPP Chen Ting-fei	Tainan City Constituency 3	Chen Ting-fei	DPP	71.38%	Hsieh Lung-jie	Kuomintang	25.73%
DPP Lin Chun-hsien	Tainan City Constituency 5	Lin Chun-hsien	DPP	58.90%	Chen Shu-hui	Kuomintang	32.46%
DPP Mark Chen Tan-sun	Tainan City Constituency 5	Wang Ting-yu [zh]	DPP	72.05%	Lin Yi-huang	Kuomintang	24.28%