Like the title says I want to watch romance dramas where the female lead is  a badass. It could be like shes a badass in fighting like head of a gang or something or just conducts herself in a badass kind of way. Like the female lead is very strong or respected or that sort of thing.

It's not a romance drama and it's short (3 episodes), but Little Girl K has a pretty badass female lead.

Strong Woman Do Bong Soon

Empress Ki 

Witch's Court

Suspicious Partner

Dong Yi

The Princess' Man

Princess Agents

Empress Ki

The Princess Wei Young

Coffee Prince

Another Miss Oh

King of Ambition

Empress Ki

In addition: King 2 Hearts, Across the Ocean to see You, spy myungwol, damo, Love O2O, dream high, montar

  • Bromance
  • Sound of the Desert
  • Live Up to Your Name
  • Doctors
  • Hospital Ship
  • City Hunter
  • Secret Garden
  • Strongest Deliveryman

My favourites are in bold. 

If you have not seen the movie My wife is a ganster, then you should check it out. It is kinda old but still great, super funny and the FL is not just badass, she's a legend (bogeyman type) and a gang leader. 

Eternal love, the FL is older and more powerful than almost everyone in the drama and she's respected by everybody in all the realms (except for a bit in the middle of the drama).

The queen of office the FL is a corporate badass.