30. Bruce Springsteen
He commands the stage, his presence and aura are second to none, and tracks like Thunder Road, Born to Run and Backstreets just confirm this.
29. Stevie Nicks (Fleetwood Mac)
Whether she was performing with Fleetwood Mac or on her own, Nicks’ voice is captivating. Edge of Seventeen is one of the greatest songs there is, and the number of Mac songs that she comes into her own on are just too many to mention.
28. Phil Lynott (Thin Lizzy)
Thin Lizzy are one of the best live bands of all time, and the reason has to be Phil Lynott. Granted, Brian Robertson and co obviously played their part but Lynott’s mesmerizing performances (despite being off his head) turned Lizzy into a much coveted and well-respected rock band.
27. Steven Tyler (Aerosmith)
I once saw Tyler place a whole orange in his mouth on TGI Friday with Chris Evans. If you can open your mouth that wide, you are sure to have a powerful voice yeah? Love in an Elevator, Janie Got a Gun, Amazing, Pink, I don’t wanna miss a thing, Dream On, Walk this Way, Sweet Emotion, Crazy. Need I go on?
26. Eddie Veder (Pearl Jam)
Illinois’ finest, ukulele-plying, head banging, grunge rocker Eddie Veder, born Edward Louis Stevenson III. No wonder he changed his name. Pearl Jam’s main man has just released an album with him and his ukulele – shows he doesn’t need anything else….
25. Brian Johnson (AC/DC)
Just because Back in Black was #1 in the rock album’s top 250, doesn’t mean Johnson would walk this countdown. Far from it – I hugely respect the Geordie, and think he has a tremendous vocal range but he is most certainly the best vocalist. Thank you for Wembley 2010 tho – what a gig!
Replacing Bon Scott in AC/DC must have been one of the hardest jobs ever in music, however, the former lead singer of Geordie instantly gelled with the Young brothers, and before you could scream “Hells Bells” the first album was out in 1980. The rest, they say, is history…..
24. Jimi Hendrix
Not renowned for his vocals, but more than held his own. Whether we were just mesmerized by his guitar playing and didn’t actually concentrate in his voice, I don not know. Ah well….
23. Ronnie Van Sant (Lynryd Skynryd)
He sang Sweet Home Alabama……..I hear pennies drop everywhere. Lead singer of southern American rockers Lynryd Skynryd.
22. Elton John
Not technically a rock vocalist, granted. Some of his earlier tracks had a rock feel to them didin’t they? No? Just me then…
21. Ozzy Osbourne (Black Sabbath, solo)
How can there be a rock vocalist countdown without Ozzy? There can’t – impossible. Black Sabbath weren’t the same with any other lead singer (as much as I love Dio – sorry!), and his first two solo albums, Blizzard of Oz and Diary of a Madman were mighty fine. And he was back to form with 2007’s Black Rain. Ozzy and Randy Rhodes together were a superb partnership which was over far, far too soon.
Rock Countdown 
We are increasingly confused about your list…you struggle to consider Elton John as a rock singer (and would agree, he was, now more a balladeer) but you have included the likes of Gwen and Sheryl in your list?
Just saying…
I take your point about EJ – altho if you look he is on a number of rock singer lists. I am going purely by his earlier stuff here….
Sheryl Crow is a rock singer. Country rock – she says so herself, and Gwen Stefani is more pop-rock, granted, but a genre of rock none-the-less. Had to mix it up a bit 😉