| Award ceremony | Year | Category | Nominee / Work | Result | Ref. |
| APAN Star Awards | 2021 | Top Excellence Award, Actress in a Serial Drama | Once Again | Won | |
| Popular Star Award, Actress | Nominated | |
| Baeksang Arts Awards | 2010 | Best New Actress – Television | Smile, You | Nominated | |
| 2011 | Best New Actress – Film | Cyrano Agency | Nominated | |
| InStyle Fashionista Award | Lee Min-jung | Won | |
| Blue Dragon Film Awards | 2010 | Best New Actress | Cyrano Agency | Won | |
| Cine21 Awards | 2010 | Best New Actress | Won | |
| Director's Cut Awards | Won | |
| Grand Bell Awards | 2010 | Won | |
| Popularity Award, Actress | Won |
| Herald Donga TV Lifestyle Awards | 2012 | Style Icon Award | Lee Min-jung | Won | |
| KBS Drama Awards | 2012 | Excellence Award, Actress in a Miniseries | Big | Nominated | |
| 2020 | Top Excellence Award, Actress | Once Again | Won | |
| Excellence Award, Actress in a Serial Drama | Nominated | |
| Netizen Award, Actress | Nominated | |
| Best Couple Award (with Lee Sang-yeob) | Won | |
| Korean Association of Film Critics Awards | 2010 | Best New Actress | White Night | Won | |
| Korea Jewelry Awards | Ruby Award | Lee Min-jung | Won | |
| MBC Drama Awards | 2014 | Top Excellence Award, Actress in a Miniseries | Cunning Single Lady | Nominated | |
| SBS Drama Awards | 2009 | New Star Award | Smile, You | Won | |
| 2011 | Excellence Award, Actress in a Special Planning Drama | Midas | Nominated | |
| 2019 | Top Excellence Award, Actress in a Mid-length Drama | Fates & Furies | Nominated | |
| Style Icon Awards | 2010 | Style Icon - Movie Actress | Cyrano Agency | Won | |
| University Film Festival of Korea | Best New Actress | Won | |