Companies using IBM Z by IBM in 2025
As of 2025, 1,469 verified companies use IBM Z – across industries, company sizes, and geographies. This is real, verified data. Whether you’re looking to analyze the market, build a target list, or get a sales edge – this is your starting point.
What is IBM Z by IBM?
IBM Z by IBM is a family of mainframe computers designed for high-volume transaction processing, data serving, and security-rich workloads. It is commonly employed across industries such as banking, finance, government, and insurance, particularly within IT departments and data centers where reliability, security, and scalability are paramount.
Last updated date
Number of Companies using
1,469
The majority are based in the
United States
Most common industry?
Finance
IBM Z’s sample user list in 2025
We have data on 1,469 companies that use IBM Z. Our IBM Z customers list is available for download and comes enriched with vital company specifics, including industry classification, organizational size, geographical location, funding rounds, and revenue figures, among others.
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IBM Z users and customers by country
2.6K Companies
2.6K Companies
2.6K Companies
2.6K Companies
Where IBM Z Shows Up Most
IBM Z is used across a wide range of sectors:
Finance
Insurance
Business Services
Banking
Custom Software & IT Services
From lean startups to global enterprises, IBM Z’s footprint is wide, and that means opportunity.

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FAQs
Contact UsHow latest this data is?
This data is updated on August 17, 2025
What is IBM Z?
IBM Z is a family of mainframe computers designed for high-volume transaction processing, data serving, and security-rich workloads.
How many companies are using IBM Z as of 2025?
As of 2025, there are 1,469 verified companies using IBM Z.
In which industries is IBM Z commonly used?
IBM Z is commonly used in industries such as banking, finance, government, and insurance.
Which country has the highest number of companies using IBM Z?
The United States has the highest number of companies using IBM Z.
Which industry uses IBM Z the most?
The Finance industry uses IBM Z the most.