- A & P
- A Brasileira
- A Caféeira
- A Dragonara
- A. C. Perch's The-Salon
- A. Vogel
- Abad Hamon
- Abbay
- Abeille d'Or
- Aberdare
- Abina Tea
- Aboca
- Abraham's Tea House
- ABS Herbs
- Abt walahfrio Strabo
- Accam Yan
- Acofar
- Acorus
- Actilife
- Activitea
- Adagio.com
- Adam
- Adams Hilborne Mansion
- Adanim
- Adanim Bio
- Addis
- Adelga Mate
- Adelgazante
- Adelgazul
- Advance Finer Foods Inc
- Afri Tea and Coffee Blenders
- African
- African Dawn
- African Natural Products
- African Pride
- Agristar
- Agro
- Agrokarpaty
- Aguantadora
- Ahmad Tea
- Aka
- Akbar
- Akdem
- Akfa
- Akin çay
- Akoz
- Aksens
- Aktuell
- Al Andalus
- Al Diafa
- Al Salam
- Al-Jawal tea
- Al-Rawabi
- Alattar
- Alavia té
- Albert
- Albert Heijn
- Albertson's
- Albred®
- Alce Nero
- Alcor
- Alete (Nestlé)
- Alex Meijer & Co
- Alexander's Gourmet Tea
- Alghazaleen Tea
- Algologie® International
- Algota
- Ali Baba
- All Seasons
- Allegro
- Alliance Santé
- Alma
- Almanac
- Alnatura
- Alnavit
- Alokozay
- Alpenländisches Kräuterhaus
- Alpha
- Alphaplant's
- Altapharma (Müller)
- Altapharma (Rossmann)
- Alter Eco
- Althaus
- Althorp
- Altin Filiz
- Altinel
- Altisa
- Altra Qualita
- Alwald Brand
- Alwazah Tea
- Amancay
- Amanda
- Amax
- Ambiance
- Ambootia
- Amer
- America's Choice
- American Classic Tea
- American Eagle
- American Fare
- American Medal Brand
- AMH
- Amor à Vida
- Amore De Bohema
- Amropa
- Amway
- An Ho Diet Tea
- Anahuac
- Anatoli Tea
- Anatolian Treasures™
- Andees
- Andersons
- Andronicus
- Anguraté
- Anhui
- Anhui.China
- Anne of Green Gables
- Antanan
- Anton Hübner
- Anyang Hotel
- Aojinha
- Apicoltura Brezzo
- Apotee
- Apotheke
- Apothekers
- Aprovel
- ApsarA
- Aqua Ligne
- Aqua san
- Aquilea
- Arava
- Arbe
- Arbell
- Arbolito
- Arbor
- Arche
- Archer Farms
- Area Viva
- Ari Gida San S.A.
- Aribella (EVIM)
- Ariel
- Arifoglu
- Arizona
- Arkopharma
- Aro
- Aroma
- Aroma Tea
- Aromas del Tungurahua
- Arome
- Arsenal
- Art of Tea
- Art of the Tea
- Artemis
- Artemis Bio
- Artemisa
- Artiso
- Arvid Nordquist H.A.B.
- Ashbys
- Asia
- Asian Family
- Asian Gourmet
- Asian Sun
- Asian Taste
- Askold
- Aspen Tea Company
- Aspreto
- Assi Brand
- Astra
- Atak
- Auchan
- Aurandina
- Aurora
- Austral Herb Teas
- Australian Fruit Tea Company
- Australian Tea
- Autobar
- Autocrat
- Aveant
- Aveda
- Avenzor
- Avitale
- Avokádo
- Avon
- Aware
- Axxent
- Ayucare
- Ayur Vital
- Ayurveda Rhyner
- Azaconsa
- Azerçay
- Azteca
- Azul
- Azzura