Loyal C. Kellogg (February 13, 1816 – November 26, 1871) was a Vermont attorney, politician and judge.

He studied law with attorney Phineas Smith of Rutland, and was admitted to the bar in 1839.

[1] He practiced law in Benson from 1839 to 1859 when he was elected an associate justice of the Vermont Supreme Court.

[1] In his later years, Kellogg devoted much of his time and effort to historical studies.

Among his written works was the history of Benson which appeared in Abby Maria Hemenway's The Vermont Historical Gazetteer.