William Andrew Duncan

11 years of practiceLicensed in New York and TexasRigby Slack PLLC, Austin

11 years in practice
First admitted in 2015
  1. 2015 Admitted, New York
  2. 2021 Admitted, Texas

Overview

William Andrew Duncan is an attorney admitted in New York (since 2015) and Texas (since 2021), based in Austin, TX.

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
New York2015#5331830Active
Texas2021#24124453Active

Education

  • Columbia Law SchoolLaw school, per the bar record

Contact and offices

Rigby Slack PLLC

3500 Jefferson St Ste 330
Austin, TX 78731

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 New York State attorney registration file; the Texas bar record. License status can change; check the bar's own record for the current status before hiring. Updated July 12, 2026.