Companies Using Deltek
38 verified companies run Deltek — including Adaptic LLC, Battelle Memorial Institute, Peraton and HII Mission Technologies. Professional Services is its biggest industry, and United States its largest market.
38
Total Companies
Professional Services
#1 Industry
United States
#1 Country
—
Case Studies
By Industry
By Country (Top 4)
Sample Deltek Customers
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View Full Deltek Benchmark DataMigration Paths to Deltek
Systems that companies switched from before adopting Deltek:
75 individual Google Docs for expense tracking
1 companies
How we verify this data
Customer counts and case studies on this page are aggregated from publicly available vendor case studies, press releases, and company filings, then deduplicated and normalized by industry, company size, and country. Case-study narratives are editorial summaries of those public sources; quotes are reproduced verbatim with attribution. See how this vendor compares across the whole corpus in our analysis of every case study we hold. Last audited September 2026. Read the full benchmark methodology.
Frequently Asked Questions
How many companies use Deltek?
Our database tracks 38 verified Deltek customers across 16 industries and 4 countries.
What industries use Deltek most?
The top industries using Deltek are Professional Services (9 companies), Government (8), and Construction (5).
Is Deltek for small or large companies?
Deltek serves companies of various sizes, from SMBs to large enterprises.
What do companies switch from to Deltek?
The most common systems that companies migrate from to Deltek include 75 individual Google Docs for expense tracking (1 companies).
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