John Dailey (April 17, 1867 – July 5, 1929) was an American lawyer and politician from Peoria, Illinois.

[1] A graduate of the University of Michigan Law School, Dailey served one term in the Illinois House of Representatives and ten terms in the Illinois Senate.

His father, a shoemaker, was a veteran of the Mexican–American and Civil Wars, wounded in the Battle of Antietam during the latter engagement.

Also that year, Dailey was elected as Republican to the Illinois House of Representatives, serving a two-year term.

Dailey was active in Freemasonry, reaching at least the thirty-second degree of the Scottish Rite.