| Kingpin K9, LLCcompany | | Las Vegas, NV | Active | 4342 |
| Kirsten R. Juddcompany | | | Active | 3046 |
| K & K Confidential Investigationscompany | | | Active | 2906 |
| Knight Watch Investigationscompany | | Henderson, NV | Active | 4531 |
| Kochuba Investigationscompany | | | Expired | 887 |
| Kristine Mautnercompany | | | Relinquished | 1290 |
| Kristopher Nicholson | | | Status not verified | 1217A |
| Kristy Nicole Moats Moody Abbott | K9rdx LLC | | Abeyance | 2674 |
| Kruz Antonio Herrera | | | Status not verified | 4489 |
| Kyle Alan Keli'L Abreu-Buendia | | | Status not verified | 4457 |
| Lamar Protection Servicescompany | | | Abeyance | 2226 |
| Landmark Event Staffing Services, Inc.company | | Irvine, CA | Relinquished | 2614 |
| Larry Royce Johnson | Larry Johnson | | Active | 4476 |
| Lashner, Rush & Associatescompany | | | Status not verified | 1288 |
| Las Vegas Detectivecompany | | | Expired | 716 |
| Las Vegas Detectives, LLCcompany | | | Expired | 716 |
| Las Vegas K9 Training LLCcompany | | Las Vegas, NV | Expired | 2095 |
| Las Vegas Polygraph And Investigationcompany | | Las Vegas, NV | Active | 1006 |
| Las Vegas Security Patrol, Inccompany | | | Status not verified | 256 |
| Las Vegas Tactical Patrolcompany | | | Expired | 2726 |
| Laura Gay Goble | | | Status not verified | 1713A |
| Lawrence Sanchezcompany | | | Active | 1477 |
| Lawyers Process Servicecompany | | | Active | 593 |
| Legal Expresscompany | | | Expired | 999 |
| Legal Wings Inccompany | | | Not Licensed | 223 |
| Leo F. Jacksoncompany | | | Active | 2296 |
| Leonard Virgil Davis | | | Status not verified | 135 |
| Leon Eugene Pierce | | | Status not verified | 4503 |
| Leslie R. Bakkecompany | | | Active | 2182 |
| Lexisnexis Risk & Information Analytics Group, Inc.company | | | Inactive | 1369 |
| Lexisnexis Risk Solutions Inccompany | | | Not Licensed | 79 |
| Linxx Global Solutions, Inc.company | | | Relinquished | 2227 |
| Lionel O'Brian Vincent | | | Status not verified | 4460 |
| Lion's Gate Security Solutions Inc.company | | Las Vegas, NV | Abeyance | 4056 |
| Live Guard Techcompany | | | Expired | 2160 |
| London Guard And Patrol Security Services/Lg&p Security Servcompany | | | Expired | 2097 |
| Long Digital Forensicscompany | | | Active | 1918 |
| Louis Burgarello | | | Expired | 134 |
| Lowers Risk Group, LLCcompany | | Purcellville, VA | Expired | 2618 |
| Lra Worldwide, Inc.company | | | Not Licensed | 153 |
| Luis Gerardo Munoz De Rueda | | | Status not verified | 4359 |
| LV Premier Protection Group, LLCcompany | | Las Vegas, NV | Expired | 4214 |
| M1 Security Managementcompany | | Las Vegas, NV | Relinquished | 2800 |
| Makor K9company | | | Active | 2161 |
| Malcolm "mike" Kirkmancompany | | | Expired | 716 |
| Manpower Security Servicescompany | | | Abeyance | 2404 |
| Maria Torres Arellanocompany | | Reno, NV | Active | 2924 |
| Maribah Ann Diaz | | | Expired | 1670 |
| Maribah Ann Diaz | | | Abeyance | 1840 |
| Maribah Ann Diaz | | | Expired | 1840FX |