Joseph Strutt (1765–1844) was an English businessman and philanthropist, whose wealth came from the family textile business. A native of Derby, Strutt was a radical social reformer who made significant donations and founded several important institutions in the town, including donating the land for the creation of Derby Arboretum, England's first urban public park. He twice served as Mayor of Derby.
Joseph was the youngest son of Jedediah Strutt of Derby and Elizabeth Woolatt, who had two other sons, William and George. The Strutt family made a fortune from a silk, cotton and calico mill on the Morledge at Derby. Three brothers worked in the family business: William in technical aspects, Joseph marketing and George management.
Joseph was baptised at the Unitarian Chapel on Friar Gate, Derby on 19 September 1765, and subsequently educated at Derby School.
In 1793 he married Isabella Archibold Douglas at St. Oswald's Church, Ashbourne, Derbyshire. Isabella subsequently died in 1801 leaving Joseph with a son and two daughters, Caroline and Isabella. Caroline married Edward Hurt but died in 1835. Isabella married John Howard Galton of Hadzor House and was the mother of Sir Douglas Strutt Galton.
Strutt served on the Derby Corporation from the age of 28, serving in numerous offices, including Chief Magistrate and two terms of office as Mayor of Derby. He served his second term as the first mayor of the reformed borough of Derby, taking office from November 1835 until November 1836.
He was a lifelong radical social reformer and dedicated the majority of his time in the service of the town. He had the firm conviction that in order to gain the respect of the working classes and reform them from "Their brutish behaviour and debasing pleasures" they must be allowed the same opportunities to enjoy civilized pleasures, such as art exhibitions and open spaces, as enjoyed by the upper classes.
He served as a Deputy Lieutenant of the local militia during the Napoleonic Wars, as England faced the threat of a French invasion.