The man, who works at a cafeteria, was convicted of molesting the 11-year-old by the High Criminal Court here yesterday.
He kissed the schoolgirl on the lips at the cafeteria in East Riffa when she ordered breakfast.
The schoolgirl told prosecutors the defendant gave her one Bahraini dirhan (BD1) after kissing her, Gulf Daily News reported without identifying the man.
"I was buying a sandwich from a cafeteria after my school exams and he grabbed me by my cheeks and kissed me on my lips," the 11-year-old said in her statement to prosecutors.
The defendant will be deported after completing his sentence.