The youths were on their way to Vijaypur late last night when the lorry coming from the opposite direction hit their bike at Sapwal belt of the district, they said.
While two of them died on the spot, the third succumbed to injury on way to the Government Medical College Hospital in Jammu, they said.
Two of them have been identified as Sanjay and Vikram, and the identity of the third was being verified, police said.