Sinfonia of London is a symphony orchestra based in London, England, conducted by John Wilson.

The present orchestra, re-established by Wilson in 2018, is the third of three distinct ensembles to bear this name. Building on Sinfonia of London's significance historically as a recording orchestra, the present ensemble released 17 albums within the first five years of its re-establishment, many of which were recipients of industry awards.

In 2021, the orchestra made its live debut at the BBC Proms, and has returned every year since, as well as performing live tours across the United Kingdom.

In its current incarnation, Sinfonia of London consists of top-tier musicians, including principals and leaders from various UK and international orchestras, distinguished soloists, and members of notable chamber groups. This has led to the ensemble being frequently described as a “supergroup” or “super-orchestra” by UK classical music journalists.