John Putnam Chapin
10th Mayor of Chicago
In office 1846 – 1847
Preceded by	Augustus Garrett
Succeeded by	James Curtiss
Born	April 21, 1810 New Hampshire
Died	July 27, 1864 Chicago, Illinois
Political party	Whig
Residence	Chicago, Illinois

John Putnam Chapin (born: April 21, 1810 in Bradford, Vermont; died: July 27, 1864; buried in Graceland Cemetery) served as Mayor of Chicago, Illinois (1846-1847) for the Whig Party.

Chapin arrived in Chicago from New Hampshire in 1832 and became a member of the wholesale and retail merchants firm Wadsworth, Dyer & Chapin.

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v • d • e Mayors of Chicago Ogden · Morris · Raymond · Lloyd · F. C. Sherman · Raymond · Garrett · A. Sherman · Garrett · Chapin · Curtiss · Woodworth · Curtiss · Gurnee · Gray · Milliken · Boone · Dyer · Wentworth · Haines · Wentworth · Rumsey · F. C. Sherman · Rice · Mason · Medill · Bond 1 · Colvin · Hoyne 2 · Heath · Harrison, Sr. · Roche · Cregier · Washburne · Harrison, Sr. · Swift · Hopkins · Swift · Harrison, Jr. · Dunne · Busse · Harrison, Jr. · Thompson · Dever · Thompson · Cermak · Corr · Kelly · Kennelly · R. J. Daley · Bilandic · Byrne · Washington · Orr · Sawyer · R. M. Daley 1 Acting officeholder.    2 Election declared null and void.