The Sri Lanka Sinha Regiment (SLSR) (Sinhala: ශ්රී ලංකා සිංහ රෙජිමේන්තුව Śrī Laṃkā Sinha Rejimēnthuva) is an infantry regiment of the Sri Lanka Army; it is the second oldest infantry regiment in the army. It is made up of seven regular battalions, five volunteer battalions and a headquarters battalion at the Ambepussa Camp.