| Election Name: | Bangkok 12th district by-election, 2013 |
| Country: | Bangkok |
| Type: | parliamentary |
| Ongoing: | Yes |
| Previous Election: | Thai general election, 2011 |
| Previous Year: | 2011 |
| Election Date: | 16 June 2013 |
| Next Election: | Thai general election, 2014 |
| Next Year: | 2014 |
| Seats For Election: | Bangkok |
| Candidate1: | Tankhun Jitt-itsara |
| Party1: | Democrat (Thailand) |
| Last Election1: | 30,675 |
| Popular Vote1: | 31,566 (891) |
| Percentage1: | 50.80% |
| Candidate2: | Yuranunt Pamornmontri |
| Party2: | Pheu Thai Party |
| Last Election2: | 38,351 |
| Popular Vote2: | 29,507 (8,844) |
| Percentage2: | 47.49% |
| Before Election: | Karun Hosakul |
| Before Party: | Pheu Thai Party |
| After Election: | Tankhun Jitt-itsara |
| After Party: | Democrat (Thailand) |
A by-election was held in the 12th district of Bangkok on 16 June 2013.[1]