| Case Name ▲ | Citation | Year | Distance from slave case(s) | Law Type | Jurisdiction |
|---|---|---|---|---|---|
| O'Brien v. Dougherty | 1 App. D.C. 148 | 1893 | 1 | District of Columbia | |
| O’Brien v. Elder | 250 F.2d 275 | 1957 | 1 | United States | |
| O’Brien v. Galloway | 362 F. Supp. 901 | 1973 | 1 | United States | |
| O'Brien v. Grand | 118 So. 2d 517 | 1960 | 1 | Louisiana | |
| O'Brien v. Hardy | 3 H. & J. 434 | 1813 | 0 | Maryland | |
| O'Brien v. Hilburn | 22 Tex. 616 | 1858 | 1 | Texas | |
| O'Brien v. Hilburn | 9 Tex. 297 | 1852 | 0 | Texas | |
| O'Brien v. Jones | 47 N.Y. Super. Ct. 67 | 1880 | 1 | New York | |
| O'Brien v. Jones | 91 N.Y. 193 | 1883 | 1 | New York | |
| O'Brien v. Lewis | 8 Ala. 666 | 1845 | 1 | Alabama | |
| O'Brien v. Liddell | 18 Miss. 371 | 1848 | 1 | Mississippi | |
| O’Brien v. Loomis | 43 Mo. App. 29 | 1890 | 1 | Missouri | |
| O'Brien v. McCarthy | 285 F. 917 | 1922 | 1 | United States | |
| O'brien v. Norris, Caldwell & Co. | 16 Md. 122 | 1860 | 1 | Maryland | |
| O'Brien v. Pentz | 48 Md. 562 | 1878 | 1 | Maryland | |
| O'Brien v. Quinn | 35 Mont. 441 | 1907 | 1 | Montana | |
| O'Brien v. Spalding | 102 Ga. 490 | 1897 | 1 | Georgia | |
| O'Brien v. State | 50 Ga. App. 189 | 1934 | 1 | Georgia | |
| O'Brien v. Von Lienen | 149 S.W. 723 | 1912 | 1 | Texas | |
| O'Brien v. Waggoner | 20 Tenn. App. 145 | 1936 | 1 | Tennessee |