Anthony Devos Johnstone (né Anthony Cameron Johnstone; born 1973) is an American lawyer who serves as a United States circuit judge of the United States Court of Appeals for the Ninth Circuit.

- Gender
- Male
- Race
- White
Prior employment
- University of Montana Blewett School of Law2007–2009, 2011–2023
- Professor2017–2023
- Affiliated professor of public administration2017–2023
- Helen and David Mason Professor of Law2019–2023
- Private practice, Missoula, Montana2015–2023
- Associate professor2014–2017
- Assistant professor2011–2014
- Associate dean for faculty development2013–2014
State of MontanaSolicitor general · 2008–2011- Adjunct professor2007–2009
State of MontanaAssistant attorney general · 2004–2008- Carroll CollegeAdjunct professor · 2006–2007
- Private practice, New York City2000–2003
Law clerk , Hon. Sidney R. Thomas · 1999–2000
Appointments
2023–present · Appointed by Joseph R. Biden (Democratic)
Education
J.D. · 1999- Yale UniversityB.A. · 1995