Surge (also known as Surge Radio) is an English student radio station based at the University of Southampton. Founded in 1976 as Radio Heffalump, the station was renamed Radio Glen the following year and originally broadcast from the university's Glen Eyre Halls complex. The station was relocated to Highfield Campus and rebranded as Surge in 2001, and is owned by the Southampton University Students' Union (SUSU).

Radio Heffalump began broadcasting in the autumn term of 1976 as a pirate station, before it was agreed in March 1977 to form a legal radio station at Glen Eyre. The station was founded as Radio Glen and initially broadcast from a studio in Glen Eyre "F-Block" before later moving to a larger office in New Terrace in 1998. In 2000 the station began broadcasting on 1287AM, having before only reached Glen Eyre tenants, and in 2001 it commenced FM transmissions for one week per year. Also in 2001, Radio Glen was renamed Surge, which initially stood for "Southampton University Radio from Glen Eyre".