| José Francisco (Pêto) | Person | Male | Brazil | | instrument, member of band |
| [anonymous] | Other | Not applicable | [Worldwide] | 5 | instrument |
| [unknown] | Other | Not applicable | [Worldwide] | 4.2 | instrument (as “t”), instrument (as “vizgunok vladimirskiy rozhok”), instrument |
| 14KT | Person | Male | United States | | instrument |
| MC 900 Ft Jesus | Person | Male | United States | | instrument |
| 1300 Oslo | Group | | Norway | | instrument (as “samples”) |
| Magnus Aannestad Oseth | Person | Male | | | instrument |
| Stian Aareskjold | Person | Male | Norway | | instrument |
| Al Aarons | Person | Male | United States | | instrument, member of band |
| Per Willy Aaserud | Person | Male | Norway | | instrument |
| Tanel Aavakivi | Person | Male | Estonia | | instrument |
| Mariano Abadias | Person | Male | Austria | | instrument |
| Ritvars Abakuks | Person | Male | Latvia | | instrument |
| Marc Abbink | Person | Male | | | member of band |
| Chloë Abbott | Person | Female | | | instrument (as “trumpets”), instrument |
| Derek Abbott | Person | Male | United Kingdom | | instrument (as “tpt”), instrument |
| Jude Abbott | Person | Female | | | instrument, member of band |
| Kevin Abbott | Person | Male | | | instrument |
| Paul Abbrecht | Person | Male | Germany | | instrument |
| Niveen Abdelatty | Person | Female | | | instrument |
| Leila Abdul‐Rauf | Person | Female | United States | | instrument |
| Omar Abdulkarim | Person | Male | United States | | instrument |
| Ahmed Abdullah | Person | Male | United States | | instrument, member of band |
| 阿部一樹 | Person | Male | | | instrument |
| Kevina Abela | | | | | instrument |
| Andris Ābelīte | Person | Male | Latvia | | instrument |
| Stan Abernathy | Person | Male | | | instrument |
| Michael Abiuso | Person | Male | United States | | recording |
| Mario Abney | Person | Male | United States | | instrument |
| Jonny Abraham | Person | Male | United Kingdom | | member of band |
| Shaun Abraham | Person | Male | | | instrument |
| John Abrahamsen | Person | Male | | | instrument |
| Arjang Abrarpour | Person | | | | instrument |
| Alexander Abreu | Person | Male | Cuba | | instrument |
| Salvatore Accardi | Person | | | | instrument |
| Louis Acerheart | Person | | United States | | member of band |
| Hazael Acevedo | Person | Male | | | instrument |
| Plácido Acevedo | Person | Male | Puerto Rico | | member of band |
| Sinclair Acey | Person | | | | instrument |
| Micha Acher | Person | Male | Germany | | instrument |
| Siegfried Achhammer | Person | Male | Germany | | instrument |
| Richard Acht | Person | Male | Germany | | member of band |
| Bruno Van Acoleyen | Person | Male | Belgium | | instrument, member of band |
| Rodolfo Acosta Osuna | Person | Male | Mazatlan | 4 | member of band |
| Adolfo Acosta | Person | Male | | | instrument |
| Jake Acosta | Person | Male | | | instrument |
| Tim Acosta | Person | Male | United States | | instrument |
| Elias Aczon | Person | Female | | | instrument |
| Ulf Adåker | Person | Male | Sweden | | instrument (as “space-chrystal-trumpet”), instrument |
| Andreas Adam | Person | Male | Germany | | member of band |
| Fabrice Adam | Person | Male | France | | instrument |
| Serge Adam | Person | Male | France | | instrument |
| Jacques Adamo | Person | Male | France | | instrument |
| Bruce Adams | Person | Male | United Kingdom | | instrument |
| Carl Adams | Person | Male | | | instrument |
| Carl Adams | Person | Male | | | instrument |
| Dwight Adams | Person | Male | Detroit | | instrument, member of band |
| Fred Adams | Person | Male | | | instrument |
| Gary Adams | Person | Male | | | instrument |
| Greg Adams | Person | Male | United States | 5 | instrument, instrument arranger, member of band |
| Indra Adams | Person | | | | instrument |
| Jawara Adams | Person | | | | instrument |
| Johnny Adams | Person | Male | | | instrument |
| Nigel Adams | Person | | United Kingdom | | instrument |
| Patrick Adams | Person | Male | | | member of band |
| Richard Adams | Person | | Minneapolis | | instrument |
| Paul Adamson | Person | Male | | | instrument (as “1st trumpet”), instrument |
| Nat Adderley | Person | Male | United States | 5 | instrument |
| Patrick Addinall | Person | | | | instrument |
| Susan Addison | Person | Female | United Kingdom | | instrument |
| Henri Adelbrecht | Person | Male | Switzerland | | instrument (as “solo trumpet I”), instrument |
| Adele Schulz | | | | | instrument |
| Osvaldo Aden | Person | Male | Germany | | instrument |
| David Adewumi | Person | | | | instrument, member of band |
| Kamau Adilifu | Person | Male | United States | | instrument |
| Jamelle Adisa | Person | Male | United States | | instrument |
| Yosemeh Adjei | Person | Male | | | instrument |
| Warwick Adler | Person | Male | | | instrument |
| Tommy Adolfsson | Person | Male | | | instrument |
| Dennis Adu | Person | Male | | | instrument |
| Ælderyn | Person | Male | | | member of band |
| Isaac Aesili | Person | Male | New Zealand | | instrument (as “trąbka”), instrument |
| Madis Aesma | Person | Male | Estonia | | instrument |
| Jasmin Afaneh | Person | Female | | | instrument |
| Beat Affolter | Person | Male | Switzerland | | instrument |
| Afrotree | Person | Male | | | member of band |
| Δημήτρης Αγάθος | Person | Male | Greece | | instrument |
| Roy Agee | Person | Male | United States | | instrument |
| Flemming Agerskov | Person | | | | instrument, member of band |
| Γιάννης Αγγελάκης | Person | Male | Greece | | instrument |
| Joakim Agnas | Person | Male | Sweden | | instrument |
| Urban Agnas | Person | Male | Sweden | | instrument |
| Laurent Agnes | Person | | | | instrument |
| Brendan Agnew | Person | Male | | | instrument |
| Raul Agraz | Person | Male | | | instrument, member of band |
| Matt Agrella | Person | Male | | | instrument |
| Joe Aguanno | Person | Male | United States | | instrument, member of band |
| Serafin Aguilar | Person | | | | instrument |
| Matt Aguiluz | Person | Male | New Orleans | | instrument |
| José Aguirre | Person | Male | Colombia | 5 | instrument |