WD
William Andrew Duncan
William Andrew Duncan is a lawyer in Austin, TX who works for Rigby Slack PLLC. Practice areas include Litigation: Commercial. Court admissions include Texas Western District Court, Wisconsin Eastern District Court. Licensed in Texas since 2021. Graduated from Columbia University in 2014.
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Law school
Bar admission
Office
Disciplinary
WD
William Andrew Duncan
Rigby Slack PLLCAustin, TX·4 years licensed
Claim profileContact attorney
William Andrew Duncan is a lawyer in Austin, TX who works for Rigby Slack PLLC. Practice areas include Litigation: Commercial. Court admissions include Texas Western District Court, Wisconsin Eastern District Court. Licensed in Texas since 2021. Graduated from Columbia University in 2014.
Law school
Columbia University
Class of 2014
Bar admission
2021
State Bar of TX · No. 24124453
Office
3500 Jefferson St Ste 330
Austin, TX 78731
Disciplinary
None on record
Clean since admission
Case data
Case data
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Practice & jurisdiction
Practice areas
- Litigation: Commercial
Courts admitted
- Texas Western District Court
- Wisconsin Eastern District Court
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Last refreshed Jun 2026