John T. Culbertson Jr. (August 7, 1891 – July 26, 1982) was an Illinois lawyer and judge.

He began practicing law in his hometown in 1916 and his brother Robert M. Culberton joined in 1926 and he and his son of the same name would continue that private legal practice even when John Culbertson left it upon becoming a judge.

On June 4, 1934, as the Democratic nominee, he won a special election to fill a vacancy on the 10th Circuit Court left by the death of John M Niehaus, defeating Republican George Z. Varnee by 37,972 votes to 31,654.

After Illinois Supreme Court justice Ray Klingbiel resigned in a scandal, Judge Culbertson served on Illinois's highest court in 1969 and 1970 before retiring.

Judge Culbertson died at his home in Delavan, Illinois in 1982.