William John Cassidy III

34 years of practiceLicensed in FloridaFINRA Dispute Resolution Services, Boca Raton

34 years in practice
First admitted in 1992
  1. 1992 Admitted, Florida

Overview

William John Cassidy III is an attorney admitted in Florida (since 1992), based in Boca Raton, FL.

This profile is built from public bar records and shows only what those records contain. William has not written or endorsed anything on this page.

Jurisdictions admitted

JurisdictionAdmittedBar numberStatus
Florida1992#964794Active

Contact and offices

FINRA Dispute Resolution Services

5200 Town Center Cir Ste 200
Boca Raton, FL 33486

The address and number above come from the attorney's public bar registration, which can lag a recent move. Confirm before visiting.

Sources for this profile: the Florida bar record. License status can change; check the bar's own record for the current status before hiring. Updated July 13, 2026.