The present invention relates to Cyclic Phosphate Substituted Nucleoside Compounds of Formula (I), and pharmaceutically acceptable salts thereof, wherein A, B, R1, R2, R3, Q and V are as defined herein. The present invention also relates to compositions comprising a Cyclic Phosphate Substituted Nucleoside Compound, and methods of using the Cyclic Phosphate Substituted Nucleoside Compounds for treating or preventing HCV infection in a patient.