Lewis Augustus Lavenu (c.1767–17 August 1818) was a musician, music seller and publisher.
His father had opened a coffee house and tavern in Salisbury where he took over the assembly rooms and held concerts for the local gentry and middle classes.
[1] Beginning as a violinist in the Covent Garden opera, Lavenu set up his "New Musical Warehouse" at 23, Duke Street, St. James, Piccadilly in 1795.
The partnership with Mitchell ended in 1806, and Lavenu built up a successful business attaining a Royal Warrant as music seller to the Prince Regent (later George IV) by his death on 17 August 1818.
Lavenu had married Elizabeth Mackenzie of Greenwich on 3 March 1793 at St George Hanover Square, Westminster.