Hazarika
Hazarika was a Paik officer under the administration of the Ahom kingdom and Koch kingdom. The commander over 1,000 ("Hazar") "paiks" was known as a "Hazarika". As it was a purely administrative position, the title holder could belong to diverse ethnic groups. The surname mostly belongs to the Ahom, Chutia, Koch, Baro-Bhuyan, Jalia Kaibarta and Sarania Kachari ethnic groups. Apart from the Ahom Hazarikas, there is also mention of "Chutia Hazarikas" in several instances of Buranjis. For example, during the reign of the Ahom king Susenphaa, the Banrukia Hazarika was of Chutia origins. At the start of the  Moamoria rebellion, Kirtichandra Barbarua first sent a force led by a Chutia Hazarika to fight the rebels, but was killed in the battle. After the fall of the Chutia kingdom, Hazarikas were appointed among Chutia blacksmiths and other guilds to look after the works. "Hazarika" was also an administrative position in the Koch army. There is mention of a Koch Hazarika in wars against the Ahoms. Previously, the surname was also written by some Sonowal Kacharis, but it was later replaced by the "Sonowal" surname. Jalia Kaibarta who participated in the Ahom and Koch state too were bestowed with the  surname. A section of Kacharis who later came to be know as Sarania Kacharis started to use Hazarika as surname after their initiation ("Saran") into Ekasarana Dharma in the 20th century.