This is a list of all United States Supreme Court cases from volume 523 of the United States Reports:
| Case name | Citation | Date decided |
|---|---|---|
| Spencer v. Kemna | 523 U.S. 1 | 1998 |
| Lexecon Inc. v. Milberg Weiss Bershad Hynes & Lerach | 523 U.S. 26 | 1998 |
| Bogan v. Scott-Harris | 523 U.S. 44 | 1998 |
| Kawaauhau v. Geiger | 523 U.S. 57 | 1998 |
| United States v. Ramirez | 523 U.S. 65 | 1998 |
| Oncale v. Sundowner Offshore Services, Inc. | 523 U.S. 75 | 1998 |
| Steel Co. v. Citizens for Better Environment | 523 U.S. 83 | 1998 |
| Quality King Distributors, Inc. v. L'anza Research Int'l, Inc. | 523 U.S. 135 | 1998 |
| Lewis v. United States | 523 U.S. 155 | 1998 |
| Gray v. Maryland | 523 U.S. 185 | 1998 |
| Glendora v. Porzio | 523 U.S. 206 | 1998 |
| Hetzel v. Prince William County | 523 U.S. 208 | 1998 |
| Cohen v. de la Cruz | 523 U.S. 213 | 1998 |
| Almendarez-Torres v. United States | 523 U.S. 224 | 1998 |
| Ohio Adult Parole Authority v. Woodard | 523 U.S. 272 | 1998 |
| Texas v. United States | 523 U.S. 296 | 1998 |
| United States v. Scheffer | 523 U.S. 303 | 1998 |
| Feltner v. Columbia Pictures Television, Inc. | 523 U.S. 340 | 1998 |
| United States v. United States Shoe Corp. | 523 U.S. 360 | 1998 |
| Breard v. Greene | 523 U.S. 371 | 1998 |
| Atlantic Mut. Ins. Co. v. Commissioner | 523 U.S. 382 | 1998 |
| Campbell v. Louisiana | 523 U.S. 392 | 1998 |
| Beach v. Ocwen Fed. Bank | 523 U.S. 410 | 1998 |
| Miller v. Albright | 523 U.S. 420 | 1998 |
| California v. Deep Sea Research, Inc. | 523 U.S. 491 | 1998 |
| Edwards v. United States | 523 U.S. 511 | 1998 |
| United States v. Estate of Romani | 523 U.S. 517 | 1998 |
| Calderon v. Thompson | 523 U.S. 538 | 1998 |
| Crawford-El v. Britton | 523 U.S. 574 | 1998 |
| Ricci v. Arlington Heights | 523 U.S. 613 | 1998 |
| Bousley v. United States | 523 U.S. 614 | 1998 |
| Stewart v. Martinez-Villareal | 523 U.S. 637 | 1998 |
| Textron Lycoming Reciprocating Engine Div., AVCO Corp. v. Automobile Workers | 523 U.S. 653 | 1998 |
| Arkansas Ed. Television Comm'n v. Forbes | 523 U.S. 666 | 1998 |
| Montana v. Crow Tribe | 523 U.S. 696 | 1998 |
| Ohio Forestry Assn., Inc. v. Sierra Club | 523 U.S. 726 | 1998 |
| Calderon v. Ashmus | 523 U.S. 740 | 1998 |
| Kiowa Tribe of Okla. v. Manufacturing Technologies, Inc. | 523 U.S. 751 | 1998 |
| New Jersey v. New York | 523 U.S. 767 | 1998 |
| County of Sacramento v. Lewis | 523 U.S. 833 | 1998 |
| Air Line Pilots v. Miller | 523 U.S. 866 | 1998 |