Stop Pay for Violent Offenders Act - Directs the Secretary of the military department concerned (Secretary concerned) to suspend all or a portion of the pay and allowances of a member of the Armed Forces who is being held in confinement pending trial by court-martial or by civil authority for any sex-related or capital offense.

Entitles such member to: (1) written notice of the suspension, (2) a reasonable time (at least seven days) to request a suspension waiver and to furnish supporting evidence, (3) representation by an attorney or other representative in making such request, and (4) a written response by the Secretary concerned and the reasons for any denial of such request.

Requires any member who is subsequently acquitted of any such charges to be paid the full amount of the withheld pay and allowances.