The court, however, did not pronounce the quantum of punishment as the Rajya Sabha MP, who left the country last month, was not present in the court, Mallya's lawyer H Sudhakar Rao said.
The quantum of punishment is expected to be pronounced on May 5 by the court, GMR lawyer Ashok Reddy said.
"Two cases pertaining to cheque-bouncing were going on against Kingfisher Airlines in the court and the matter was posted for arguments. After the arguments today, the court convicted Mallaya, Kingfisher and a senior official of the airline under section 138 of Negotiable Instruments Act.
"Because Vijay Mallya was not here, the sentence has not been pronounced...only conviction has been recorded. Since no accused have appeared before the court, only conviction has been recorded," Sudhakar Rao told PTI.