Loyal C. Kellogg (Feb 13, 1816 – Nov 26, 1872) was a Justice of the Vermont Supreme Court from 1860 to 1867.
Born in Benson, Vermont, Kellogg graduated from Amherst College in 1836, then studied law in Rutland and was admitted to the bar in 1839. He practiced law in Benson from 1839 to 1859 when he was elected Judge of the Vermont Supreme Court. He served from 1860 through 1867, being reelected each year by the legislature. Although elected to the court in 1868, he declined on Nov 4, 1867, in a letter to John B. Page, due to failing health.
He represented Benson in the General Assembly in 1847, 1850, 1851, 1859 and 1871, serving on the Committee of Banks (1847), the Committee of Banks and Revision (1851), and the Committee on the Judiciary (1859). He did not serve on any committee in 1871, due to failing health, bud did participate on the joint Committee of the Library. He served as a delegate from Benson to the Constitutional Conventions of 1847 and 1870 and was a representative to the Convention of 1857 from Rutland, and was elected its President. He also served as a director of the Bank of Rutland and the Nation.