Pliny Norcross (November 16, 1838 – July 11, 1915) was an American lawyer, businessman, and Republican politician from Janesville, Wisconsin.

He represented Rock County in the Wisconsin State Assembly for four terms spread across the 1860s, 1880s, and 1900s, and served four years as district attorney.

[2] He left school due to the outbreak of the American Civil War and joined up with the "Governor's Guard"—a Madison-based militia company headed by captain Lucius Fairchild.

They participated in the Battle of Hoke's Run in July 1861, and Norcross was promoted to corporal, but their three-month enlistment expired a short time later.

[3] Norcross chose to re-enlist for a three-year term, and was commissioned captain of Company K in the 13th Wisconsin Infantry Regiment.

[5] After returning from the war, Norcross settled in Janesville, Wisconsin, and became a junior law partner to Judge John R. Bennett.

He went east to Brooklyn, New York, where he became a founder of International Tile Co. After constructing the factory, however, he quickly sold his stake in the company and returned to Janesville.

His paternal grandfather was Daniel Norcross, who served as a corporal in a minutemen company during the American Revolutionary War.

[1] Norcross was also noteworthy for the part he played in the career of Lavinia Goodell, the first woman admitted to the State Bar of Wisconsin.

[2] Norcross's Phoebus Block in Janesville is still standing and operating as a commercial property; its current address is 23–25 West Milwaukee Street.