| Lackey, Al | 8-26-1885 | Hanging | Blanco | N. of Blanco, TX | n/a | Multiple-Murder | SE corner of the Robison (now Alvin Wegner) field, 0.5 mi. NW of Blanco. |
| Lackey, Clarence | 5-20-1997 | Lethal Injection | Tom Green | Huntsville, TX | 591 | Rape | |
| Lacume, Bernard | 8-23-1935 | Electrocuted | Angelina | Huntsville, TX | 152 | Murder | |
| Lacy, Harry | 12-19-1939 | Electrocuted | Montgomery | Huntsville, TX | 222 | Murder | |
| Lamb, John | 11-17-1999 | Lethal Injection | Hunt | Huntsville, TX | 734 | Robbery | |
| Lamkin, Marshall | 9-19-1958 | Electrocuted | Caldwell | Huntsville, TX | 402 | Murder | |
| Landry, Raymond Sr. | 12-13-1988 | Lethal Injection | Harris | Huntsville, TX | 738 | Robbery | |
| Lane, Harold | 10-4-1995 | Lethal Injection | Dallas | Huntsville, TX | 745 | Robbery | |
| Lane, Leroy | 1-25-1935 | Electrocuted | Dallas | Huntsville, TX | 137 | Murder | |
| Lang, Edward | 8-19-1916 | Lynched | Navarro | Rice, TX | n/a | ||
| Larkin, Thomas | 2-21-1949 | Electrocuted | Harrison | Huntsville, TX | 312 | Murder | |
| Lavan, John | 3-31-1963 | Electrocuted | Harris | Huntsville, TX | 444 | Murder | |
| Lawson, Earnest | 3-28-1924 | Electrocuted | Dallas | Huntsville, TX | 7 | Murder | |
| Lawton, Stacey | 11-14-2000 | Lethal Injection | Smith | Huntsville, TX | 999066 | Burglary | |
| Layes, Paul | 5-10-1938 | Electrocuted | Hays | Hunstville, TX | 194 | Murder | |
| Leahy, H. J. | 9-2-1929 | Electrocuted | Williamson | Huntsville, TX | 62 | Murder | |
| Leath, Fred | 11-9-1961 | Electrocuted | Tarrant | Huntsville, TX | 429 | Murder | |
| Lee, David | 1-8-1914 | Lynched | Marion | Jefferson, TX | n/a | ||
| Lera, Leo | 2-19-1943 | Electrocuted | Fort Bend | Huntsville, TX | 251 | Murder | |
| Lerma, Jeronimo | 6-20-1916 | Lynched | Cameron | Brownsville, TX | n/a | ||
| Lewis, Elmer | 2-25-1893 | Lynched | Wichita | Wichita Falls, TX | n/a | ||
| Lewis, Felix | 6-21-1950 | Electrocuted | Live Oak | Huntsville, TX | 328 | Rape | |
| Lewis, George | 4-26-1889 | Lynched | Belen, TX | n/a | |||
| Leza, Joe | 9-1-1946 | Electrocuted | Bexar | Huntsville, TX | 283 | Murder | |
| Lincecum, Kavin | 12-10-1992 | Lethal Injection | Brazoria | Huntsville, TX | 832 | Rape | |
| Lindley, George | 7-28-1889 | Lynched | Hunt | Greenville, TX | n/a | ||
| Little, William | 6-1-1999 | Lethal Injection | Liberty | Huntsville, TX | 788 | Rape | |
| Livingston, Charlie | 11-21-1997 | Lethal Injection | Harris | Huntsville, TX | 802 | Robbery | |
| Lockhart, Michael | 12-9-1997 | Lethal Injection | Bexar | Huntsville, TX | 917 | Policeman | |
| Long, David | 12-8-1999 | Lethal Injection | Dallas | Huntsville, TX | 862 | Robbery | |
| Lopez, Estamistado | 6-10-1932 | Electrocuted | Willacy | Huntsville, TX | 100 | Murder | |
| Lott, George | 9-20-1994 | Lethal Injection | Potter | Huntsville, TX | 999058 | ||
| Louti, Aua | 11-4-1997 | Lethal Injection | Harris | Huntsville, TX | 843 | Robbery | |
| Lozada, Davis | 6-4-1997 | Lethal Injection | Cameron | Huntsville, TX | 798 | Rape | |
| Lucy (Slave woman) | 3-5-1858 | Hanged | Galveston Island | ||||
| Lugo, Genaro | 4-23-1939 | Electrocuted | San Patricio | Huntsville, TX | 213 | Murder | |
| Luton, Leo | 2-20-1963 | Electrocuted | Dallas | Huntsville, TX | 432 | Murder | |
| Lyons, Webster | 4-28-1940 | Electrocuted | Bexar | Huntsville, TX | 227 | Murder |