Hey.

Yes, For admission in 3 year LLB course aftwr completion of graduation there are various entrance examinationa for different colleges. Students in their final year of Undergraduation are also eligible to take these entrances. The most sought after entrances for 3 year LLB course are-

DU LLB - Delhi University

  MH CET- GLC mumbai, ILS Pune and other colleges in Maharashtra

  SLAT- Symbiosis Law school  

PU LLB- Panjab University, Chandigarh    

LSAT- Jindal global Law school, IIT Kharagpur and other private law colleges

BHU LLB- Banaras Hindu University 

BVP LLB- Bharatiya Vidyapeeth

TS LAWCET Etc

Best of luck!