Credits are adapted from the liner notes of ''#1's''. •
Charles Alexander – mixing (track 6) • Jovonn Alexander – production (track 6) • Rich Balmer – engineering assistance (track 3) • Steve Baughman – mixing assistance (track 12) • Karren Berz – live strings (track 3) •
Angela Beyincé – songwriting (tracks 5 and 13) • Courtney Blooding – production coordination (track 1) •
Kevin "She'kspere" Briggs – engineering (tracks 10 and 12), instrumentation (tracks 10 and 12), Midi & Sound (tracks 10 and 12), production (tracks 10 and 12), songwriting (tracks 10 and 12), vocal production (tracks 10 and 12) •
Mary Brown – songwriting (track 14) •
Kandi Burruss – songwriting (tracks 10 and 12), vocal production (track 10) • Michael Calderon – engineering (track 12) • Orlando Calzada – engineering (track 3) • Jim Caruana – engineering (tracks 4, 5, 7, 13, 15 and 16) •
Shawn Carter – songwriting (track 7) • Jules Chaikin – orchestra contracting (track 1) • Fusako Chubachi – art direction, design •
Vinnie Colaiuta – drums (track 1) •
Paulinho da Costa – percussion (track 1) •
Tom Coyne – mastering (all tracks) •
LaShawn Daniels – engineering (track 8), songwriting (tracks 7, 8 and 16), vocal production (track 8) •
Don Davis – songwriting (track 13) • Kevin "KD" Davis – mixing (tracks 10 and 12) • Andre DeBaurg – engineering (track 6) •
Anthony Dent – engineering (track 3), production (track 3), songwriting (track 3) • Neil Devor – digital engineering (track 1) • David Donaldson – engineering (track 6) •
Patrick "9th Wonder" Douthit – production (track 13), songwriting (track 13) •
Jerry Duplessis – production (track 14) •
Nathan East – bass (track 1) • Chad Elliot – mixing (track 6), production (track 6), songwriting (track 6) • Robert Erdmann – photography •
Mark Feist – production (track 9) • Fabrizio Ferri – photography •
Amy Foster-Gillies – lyrical songwriting (track 1) •
David Foster – arrangement (track 1), keyboards (track 1), musical songwriting (track 1), production (track 1), string arrangement (track 1) •
Farrah Franklin – backing vocals (track 2) •
Rob Fusari – production (track 11), songwriting (tracks 11 and 14) • Calvin Gaines – songwriting (track 14) •
Sean Garrett – production (track 4), songwriting (tracks 4, 5, 7 and 13), vocal production (track 7) •
Humberto Gatica – engineering (track 1), mixing (track 1), production (track 1) •
Barry Gibb – songwriting (track 9) •
Robin Gibb – songwriting (track 9) • Brad Gildem – engineering (track 8) • Rawle Gittens – additional engineering (track 14) • Troy Gonzalez – additional engineering (track 2) • Erwin Gorostiza – art direction • Che Greene – production (track 14) • Andy Gwynn – mixing assistance (track 3) •
Rich Harrison – production (track 4), songwriting (track 4) •
Vincent Herbert – songwriting (track 14) •
James Hoover – engineering (track 14) • Jean Marie Hurout – mixing (track 8) •
Wyclef Jean – production (track 14), vocals (track 14) • Storm Jefferson – engineering assistance (track 14), mixing assistance (track 14) • Nathan Jenkins – engineering (track 5) •
Fred Jerkins III – songwriting (tracks 7, 8 and 16) •
Rodney Jerkins – instrumentation (tracks 7, 8 and 15), production (tracks 7, 8, 15 and 16), songwriting (tracks 7, 8, 15 and 16) •
Beyoncé Knowles – backing vocals (all tracks), executive production, lead vocals (all tracks), production (tracks 1–7, 9, 11, 13, 15 and 16), vocal arrangement (track 9), vocal production (tracks 1, 4, 5, 7, 12, 13, 15 and 16), songwriting (tracks 2–8, 10–13, 15 and 16) •
Mathew Knowles – executive production, production (track 9), songwriting (track 3) • Mike Kopcha – mixing assistance (track 10) • Jason Larien – engineering assistance (track 1) • Ricky "Ric Rude" Lewis – instrumentation (track 15), production (tracks 15 and 16), songwriting (tracks 15 and 16) •
Lil Wayne – songwriting (track 4), vocals (track 4) •
LeToya Luckett – backing vocals (tracks 6, 8, 10 and 12), songwriting (tracks 8, 10 and 12) • Fabian Marasciullo – additional vocal engineering (track 4) •
Tony Maserati – mixing (tracks 3, 7, 11 and 15) •
Errol "Poppi" McCalla, Jr. – additional programming (track 9) •
Falonte Moore – production (track 11), songwriting (track 11) • Rufus Moore – songwriting (track 6) • Ramon Morales – additional engineering (track 2), engineering (track 10) • Vernon Mungoat – engineering (track 12) • Huy Nguyen – A&R •
Stevie Nicks – songwriting (track 11) • Flip Osman – mixing assistance (tracks 3 and 11) •
Dean Parks – guitar (track 1) •
Dave "Hard Drive" Pensado – mixing (tracks 5, 9 and 13) •
Poke & Tone – production (track 2), songwriting (track 2) • Claudine Pontier – engineering assistance (track 12) • Redd – keyboards (track 3) • Geoffrey Rice – engineering assistance (track 5) • Warren Riker – engineering (track 14), mixing (track 14) • Byron Rittenhouse – vocals (track 6) • Alejandro Rodriguez – digital engineering (track 1) •
Cory Rooney – production (track 2), songwriting (track 2) •
LaTavia Roberson – backing vocals (tracks 6, 8, 10 and 12), songwriting (tracks 8 and 10) • Eddie Robinson – songwriting (track 13) •
Kelly Rowland – backing vocals (tracks 1–4 and 6–16), executive production, lead vocals (tracks 1–4, 7, 9–13, 15 and 16), songwriting (tracks 4, 7, 8, 10, 12, 13, 15 and 16) • Bill Ross – string arrangement (track 1) • Matt Serrecchio – engineering assistance (track 5) • Dexter Simmons – mixing (tracks 4, 5 and 16) •
Slim Thug – songwriting (track 5), vocals (track 5) • Spicer – photography • Brian Springer – engineering (track 9) • Manelich Sotolongo – engineering (track 2) • Tim Stewart – guitar (track 15) •
Swizz Beatz – production (track 5), songwriting (track 5) • Tom Tapley – additional vocal engineering (track 4) •
T.I. – songwriting (track 4), vocals (track 4) • Rich Travali – mixing (track 2) • Jochem van der Saag – organ (track 1), programming (track 1), sound design (track 1) • Jeff Villanueva – engineering (tracks 7, 15 and 16) • Rommel Nino Villanueva – additional Pro Tools editing (track 4) •
Robert Waller – songwriting (track 15) •
Michelle Williams – backing vocals (tracks 1–4, 7, 9, 11, 13, 15 and 16), executive production, lead vocals (tracks 1, 3, 4, 7, 9, 11, 13, 15 and 16), songwriting (tracks 4, 7, 13, 15 and 16) • Dan Workman – additional engineering (track 9), engineering (tracks 10, 11) == Charts ==