William Bell Waddell (September 21, 1828 – June 3, 1897) was an American politician and judge from Pennsylvania.

[2] In 1871, he was elected as a Republican to the Pennsylvania Senate, representing the 5th district, succeeding Henry S. Evans.

[3][5] In 1887, Waddell was appointed as "additional law judge" of the Pennsylvania Court of Common Pleas.

After the death of J. Smith Futhey, he was appointed president judge of the Pennsylvania Court of Common Pleas.

[2] Waddell died of a heart attack on June 3, 1897, at his home in West Chester.

[1][3] He was buried at Oaklands Cemetery in West Goshen Township, Pennsylvania.