THIS ONE GOES TO 12 (1997, Epic, CD) — Suicide Solution (Live from Ozzfest) (OZZY OSBOURNE)
WU-TANG CLAN — WU-TANG FOREVER (1997, RCA, 2CD) — For
Heavens Sake (Ozzy with Tony Iommi & WU-TANG CLAN)
CHEF AID: THE SOUTH PARK ALBUM (SOUNDTRACK) (1998, Sony, CD (Edited and extreme versions with different covers) — Nowhere To Run (Vapor Trail) (Ozzy with DMX, OL’ DIRTY BASTARD, CRYSTAL METHOD & FUZZBUBBLE)
NOWHERE TO RUN (1998, Sony, CD-Single) — Nowhere To Run (Album Version) (Ozzy with DMX, OL’ DIRTY BASTARD, CRYSTAL METHOD & FUZZBUBBLE)/Nowhere To Run (Spoonface Remix)
RINGO STARR — VERTICAL MAN (1998, CD) — Vertical Man (Ozzy sings back vocals) BUSTA RHYMES — E.L.E. (EXTINCTION LEVEL EVENT) (1998, Electra, CD (Explicit and edited versions)) — This Means War! (feat. Ozzy) BUSTA RHYMES — THIS MEANS WAR! (1998, Electra, CD-Single) —
This Means War! (Album Version) (feat. Ozzy), This Means War! (Spoonface Remix)
RICK WAKEMAN — RETURN TO THE CENTRE OF THE EARTH (1999, EMI, CD) — Buried Alive (Ozzy sings lead vocals)
RICK WAKEMAN — BURIED ALIVE (1999, EMI, CD-Single) — Buried Alive (Edit Version)/Buried Alive (Album Version) (Ozzy sings lead vocals)
IT’S ONLY ROCK & ROLL (1999, Universal, 2CD-Single) — It’s Only Rock & Roll (Single Version)/It’s Only Rock & Roll (Shafts Radio Remix)/It’s Only Rock & Roll (Video) (Children’s Promise Charity project featuring many artists including Ozzy)
OZZFEST DOGGY BAG (1999, Sony, CD-Promo) — Snowblind (Live ’97) (BLACK SABBATH) DETROIT ROCK CITY — MUSIC FROM THE MOTION PICTURE (1999, Island, CD) — Iron Man (BLACK SABBATH)
NO BOUNDARIES — A BENEFIT FOR THE KOSAVAR REFUGEES (1999, Epic, CD) — Psycho Man (Danny Saber Remix) (BLACK SABBATH)
COAL CHAMBER — CHAMBER MUSIC (1999, Roadrunner, CD) —
Shock The Monkey (Ozzy sings chorus)
COAL CHAMBER — SHOCK THE MONKEY (1999, Roadrunner, CD-Single) — Shock The Monkey (Album Version)/Shock The Monkey (Gorilla Mix) (Ozzy sings chorus)
NATIVITY IN BLACK II — A TRIBUTE TO BLACK SABBATH (2000, Divine, CD) — N.I.B. (Ozzy with PRIMUS), This Means War! (BUSTA RHYMES feat. Ozzy)
STRAIT UP (2000, Virgin, CD (Explicit and clean versions)) — Ozzy speaks for 13 seconds about Lynn Strait from KNOT who was killed in car accident
LOUD ROCKS (2000, Sony, CD) — For Heavens Sake (Ozzy with Tony Iommi & WU-TANG CLAN)
IOMMI — IOMMI (2000, Divine, CD) — Who’s Fooling Who (Ozzy sings lead vocals)
ESSENTIAL PARANOID (2000?, CD (Probably not official)) — Different versions of «Paranoid» covered by different artists including original and live versions of BLACK SABBATH and OZZY OSBOURNE.
ROB ZOMBIE — THE SINISTER URGE (2001, Geffen, LP/CD) — Iron Head (featuring vocals of Ozzy)
OZZFEST: SECOND STAGE LIVE (2001, Divine, 2CD (Clean & explicit versions)) — I Don’t Know (Live) (OZZY OSBOURNE), Perry Mason (Live) (OZZY OSBOURNE)
OZZFEST 2001 — THE SECOND MILLENIUM (2001, Divine, CD (Clean and explicit versions with different covers) — The Wizard (BLACK SABBATH)