- Aani
- Aapo
- Aavagen
- Aava Mobile
- Aava Ohjelmistot
- Aavi Technologies
- Abacus Diagnostica
- Abbis
- Abomics
- About Her App
- Absolute-North
- ACT
- Action-Reaction Games
- Action Squad Studios
- ADA Drive
- Adalyon
- Adaptio.io
- Adaptos
- Add Inspiration
- AddNow
- AddSearch
- Adesante
- Aditux / Red Solution
- adlearning
- Adusso
- Advacam
- Advisus
- aecmaster
- Aeromon
- Agilefant
- Agion
- Ahkera Smart Tech
- Aibidia
- AIContentfy
- Aidon
- Aid One
- Aiforia Technologies
- Aikumo
- Aila
- Ainak
- Aina Wireless
- aino.ar
- Aircohol
- Air Dice
- Airmodus
- Airpay
- Aitofit
- Aiwo Digital
- AJR Solutions
- Albertine
- Alfons Education
- Alinor
- Almondella
- Almost Human
- Alpakka Media
- AlphaSense
- Altal
- Altonova
- Alula Energy
- Alvar Pet
- Amandan Healthcare
- Ambio
- Ambronite
- Amped
- Amplifiles
- Ampner
- Analyse²
- Anders Innovations
- Aniway
- Ankerias
- AnttiPatterns
- APE Payment
- Apifonica
- Aplagon
- AppFollow
- AppGyver
- Applixure
- Apprien
- Apukuski
- Aqsens (New ID: 2817656-9)
- Aquaminerals
- Arador Innovations
- Arbitron Mobile
- Arctic Warriors
- Ardilla
- Arilyn
- Arkkeo
- Asema
- A.S.Helsingö
- Askel Healthcare
- AskKauko
- Asqella
- Assetti
- Assure
- Aste Finland
- Audiodraft
- Audiomimi
- AudioSauan
- Augmented Climbing Wall
- Augumenta
- Aurealis Pharma
- Aurelia Turbines
- Automata
- automate.video
- Autoprod
- Autori
- Aves Netsec
- Axel Technologies
- Axinoss
