Alternative Titles
Bulgaria
| Title | Type |
| Морски детективи |
Czech Republic
| Title | Type |
| Navy NCIS |
France
| Title | Type |
| NCIS or NCIS : Enquêtes spéciales |
Greece
| Title | Type |
| NCIS: Λος Άντζελες |
Hungary
| Title | Type |
| NCIS - Tengerészeti Helyszínelők |
IR
| Title | Type |
| NCIS (سرویس تحقیقات جنایی نیروی دریایی آمریکا) |
Lithuania
| Title | Type |
| Specialioji jūrų policijos tarnyba (NCIS) |
Portugal
| Title | Type |
| Investigação Criminal |
Thailand
| Title | Type |
| เอ็นซีไอเอส: หน่วยสืบสวนแห่งนาวิกโยธิน |
Ukraine
| Title | Type |
| Морська поліція |
United States of America
| Title | Type |
| NCIS: Naval Criminal Investigative Service |
United States of America
| Title | Type |
| N.C.I.S. |
United States of America
| Title | Type |
| Navy NCIS: Naval Criminal Investigative Service |
United States of America
| Title | Type |
| Navy NCIS | title used during season 1 |