| IRS v. FLRA | Wrote a dissent | Tuesday, April 17, 1990 | 7-2 |
| Port Authority Trans-Hudson Corp. v. Feeney | Wrote a special concurrence | Monday, April 30, 1990 | 9-0 |
| Maislin Industries, US, Inc. v. Primary Steel, Inc. | Wrote the majority opinion | Thursday, June 21, 1990 | 7-2 |
| Cruzan v. Director, Missouri Dept. of Health | Wrote a dissent | Monday, June 25, 1990 | 5-4 |
| Osborne v. Ohio | Wrote a dissent | Wednesday, April 18, 1990 | 6-3 |
| Austin v. Michigan Chamber of Commerce | Wrote a regular concurrence | Tuesday, March 27, 1990 | 6-3 |
| Department of Labor v. Triplett | Wrote a special concurrence, joined Marshall's concurrence | Tuesday, March 27, 1990 | 9-0 |
| Metro Broadcasting Inc. v. FCC | Wrote the majority opinion | Wednesday, June 27, 1990 | 5-4 |
| Selvage v. Collins | Wrote a regular concurrence, joined Blackmun's concurrence | Wednesday, February 21, 1990 | 9-0 |
| Duro v. Reina | Wrote a dissent | Tuesday, May 29, 1990 | 7-2 |
| United States v. Eichman | Wrote the majority opinion | Monday, June 11, 1990 | 5-4 |
| United States v. Kokinda | Wrote a dissent | Wednesday, June 27, 1990 | 5-4 |
| United States v. Verdugo-Urquidez | Wrote a dissent | Wednesday, February 28, 1990 | 6-3 |
| Michigan Department of State Police v. Sitz | Wrote a dissent, joined Stevens' dissent | Thursday, June 14, 1990 | 6-3 |
| John Doe Agency v. John Doe Corp. | Wrote a regular concurrence | Monday, December 11, 1989 | 6-3 |
| Clemons v. Mississippi | Wrote a dissent, joined Blackmun's dissent | Wednesday, March 28, 1990 | 5-4 |
| Horton v. California | Wrote a dissent | Monday, June 4, 1990 | 7-2 |
| Maryland v. Buie | Wrote a dissent | Wednesday, February 28, 1990 | 7-2 |
| Burnham v. Superior Court of Cal., County of Marin | Wrote a special concurrence | Tuesday, May 29, 1990 | 9-0 |
| James v. Illinois | Wrote the majority opinion | Wednesday, January 10, 1990 | 5-4 |
| FTC v. Superior Court Trial Lawyers Assn. | Wrote a dissent | Monday, January 22, 1990 | 6-3 |
| Teamsters v. Terry | Wrote a special concurrence | Tuesday, March 20, 1990 | 6-3 |
| Florida v. Wells | Wrote a special concurrence | Wednesday, April 18, 1990 | 9-0 |
| Lewis v. Jeffers | Wrote a dissent, joined Blackmun's dissent | Wednesday, June 27, 1990 | 5-4 |
| Ngiraingas v. Sanchez | Wrote a dissent | Tuesday, April 24, 1990 | 6-2 |
| Spallone v. United States | Wrote a dissent | Wednesday, January 10, 1990 | 5-4 |
| Breininger v. Sheet Metal Workers | Wrote the majority opinion | Tuesday, December 5, 1989 | 7-2 |
| Milkovich v. Lorain Journal | Wrote a dissent | Thursday, June 21, 1990 | 7-2 |
| North Dakota v. United States | Wrote a dissent | Monday, May 21, 1990 | 5-4 |
| Grady v. Corbin | Wrote the majority opinion | Tuesday, May 29, 1990 | 5-4 |
| Preseault v. ICC | Wrote the majority opinion | Wednesday, February 21, 1990 | 9-0 |
| Butler v. McKellar | Wrote a dissent | Monday, March 5, 1990 | 5-4 |
| Wilder v. Virginia Hospital Assoc. | Wrote the majority opinion | Thursday, June 14, 1990 | 5-4 |
| Walton v. Arizona | Wrote a dissent, joined Blackmun's dissent | Wednesday, June 27, 1990 | 5-4 |
| Saffle v. Parks | Wrote a dissent | Monday, March 5, 1990 | 5-4 |
| Illinois v. Perkins | Wrote a special concurrence | Monday, June 4, 1990 | 8-1 |
| Rutan v. Republican Party of Illinois | Wrote the majority opinion | Thursday, June 21, 1990 | 5-4 |
| Dole v. United Steel Workers of America | Wrote the majority opinion | Wednesday, February 21, 1990 | 7-2 |
| Atlantic Richfield Co. v. USA Petroleum Co. | Wrote the majority opinion | Monday, May 14, 1990 | 7-2 |
| Pennsylvania v. Muniz | Wrote the majority opinion | Monday, June 18, 1990 | 8-1 |
| Dowling v. United States | Wrote a dissent | Wednesday, January 10, 1990 | 6-3 |
| Blystone v. Pennsylvania | Wrote a dissent | Wednesday, February 28, 1990 | 5-4 |
| FW/PBS, Inc. v. Dallas | Wrote a special concurrence | Tuesday, January 9, 1990 | 6-3 |
