James Alonzo Pinney (September 29, 1835 – February 4, 1914) served as mayor of Boise, Idaho Territory (later Boise, Idaho) in the late 19th century and early 20th century.

He is the only person in the city's history to serve as mayor three nonconsecutive times and win election as mayor five times.

In his lifetime he owned a bookstore and two theaters.

When The Columbia was torn down in 1908, Pinney replaced it with a five-story theater dubbed The Pinney Theater.

This article about a mayor in Idaho is a stub.