The late With A Little Help From My Friends singer was crowned the number one in our poll to find the best singers born in Sheffield or with Steel City roots.
Cocker, who died in 2014, secured 20% of the vote, ahead of namesake, Pulp frontman Jarvis Cocker who polled 14% of your votes to land runners-up spot.
The Crookes-born rock and blues man, whose career spanned more than 50 years, was not related to the second-placed Common People star - although the rumour persists, particularly across the globe, that the pair are connected.
Third place in the poll went to Housemartins and The Beautiful South frontman Paul Heaton who secured 11% of the vote.
Although Merseyside born, Heaton, whose hits include A Little Time and Happy Hour, moved to Sheffield as a youngster and spent his childhood growing up in the city and becoming a diehard Sheffield United fan.
It was enough to put him ahead of homegrown Arctic Monkeys star Alex Turner who landed fourth spot (10%) and The Human League's Phil Oakey who finished in fifth spot with 8%.
Crooner Richard Hawley secured 7% of the vote to finish sixth.
SHEFFIELD'S BEST SINGER - THE FULL RESULTS
1. Joe Cocker
2. Jarvis Cocker (Pulp)
3. Paul Heaton (The Housemartins/Beautiful South)
4. Alex Turner (Arctic Monkeys)
5. Phil Oakey (The Human League)
6. Richard Hawley
7. Paul Carrack (Ace/Mike + The Mechanics)
7= Joe Elliott (Def Leppard)
7= Jon McClure (Reverend and The Makers)
7= Bruce Dickinson (Iron Maiden)
11. Martin Fry (ABC)
12. Graham Fellows (John Shuttleworth/Jilted John)
13. Stephen Jones (Babybird)
13= Dave Berry
13= Stephen Mallinder (Cabaret Voltaire)
13= Glenn Gregory (Heaven 17)
13= Olly Alexander (Years and Years)
18. Roisin Murphy (Moloko)