Ah Sin v. Wittman

{{Use mdy dates|date=January 2025}}

{{Infobox SCOTUS case

|Litigants=Ah Sin v. Wittman

|ArgueDate=

|ArgueYear=

|DecideDate=May 29

|DecideYear=1905

|FullName=Ah Sin v. Wittman

|USVol=198

|USPage=500

|ParallelCitations=

|Prior=

|Subsequent=

|Holding=To prove abuse of discretion in the enforcement of criminal law that violates the Equal Protection Clause, it is necessary to show that there were people of other races who committed the same crime without being prosecuted.

|Majority=McKenna

|JoinMajority=

|Dissent=Peckham

|LawsApplied=

}}

Ah Sin v. Wittman, 198 U.S. 500 (1905), was a United States Supreme Court case in which the Court held that, to prove abuse of discretion in the enforcement of criminal law that violates the Equal Protection Clause, it is necessary to show that there were people of other races who committed the same crime without being prosecuted.{{ussc|name=Ah Sin v. Wittman|volume=198|page=500|year=1905}}{{Cite book |last=Lieberman |first=Jethro K. |title=A Practical Companion to the Constitution |year=1999 |pages=393|chapter=Prosecutorial Discretion}} This case involved anti-Chinese sentiment at the turn of the 20th century. Justice Rufus W. Peckham dissented without writing an opinion.