Largest employers in Leuven (Heverlee)
498 companies registered in 3001 Leuven (Heverlee) report employees in recent accounts; here are the top 20. Interuniversitair Micro-Electronica Centrum leads with 2,904.3 FTE (financial year 2025).
Top 20
Ranked by average headcount (FTE) reported in the latest filed accounts (accounts less than 3 years old).
| # | Company | Total assets | Revenue | Equity | FTE | Year |
|---|---|---|---|---|---|---|
| 1 | Interuniversitair Micro-Electronica Centrum Scientific research and development | €1.27bn | €804.3m | €512.1m | 2,904.3 | 2025 |
| 2 | IDEWE - Externe dienst voor Preventie en Bescherming op het werk Human health activities | €105.6m | €129.6m | €70.5m | 806.9 | 2025 |
| 3 | Terumo Europe Other manufacturing | €979.9m | €799.2m | €590.9m | 721.3 | 2026 |
| 4 | Materialise Other manufacturing | €394.7m | €181.0m | €259.8m | 605.9 | 2025 |
| 5 | VITeS Social work activities without accommodation | €40.2m | €14.0m | €31.2m | 529.8 | 2025 |
| 6 | Donaldson Europe Activities of head offices and management consultancy | €1.12bn | €320.8m | €744.9m | 503.3 | 2025 |
| 7 | Siemens Industry Software Architectural and engineering activities; technical testing and analysis | €482.8m | €353.6m | €205.5m | 486.8 | 2025 |
| 8 | AE Computer programming, consultancy and related activities | €27.3m | €64.8m | €9.10m | 336.0 | 2025 |
| 9 | Jungheinrich Wholesale trade | €60.8m | €100.7m | €14.2m | 239.1 | 2025 |
| 10 | Afrima Repair and maintenance of computers, personal and household goods, and motor vehicles and motorcycles | €20.4m | €43.3m | −€2.53m | 222.4 | 2024 |
| 11 | Symeta Hybrid Printing and reproduction of recorded media | €27.8m | €53.9m | €10.5m | 216.6 | 2026 |
| 12 | JSR Micro Manufacture of chemicals and chemical products | €144.7m | €174.6m | €109.6m | 213.1 | 2026 |
| 13 | Nelson Labs Architectural and engineering activities; technical testing and analysis | €769.0m | €41.3m | €595.3m | 202.5 | 2025 |
| 14 | Care Carrosserie Repair and maintenance of computers, personal and household goods, and motor vehicles and motorcycles | €19.6m | €22.1m | €3.93m | 190.2 | 2024 |
| 15 | TOMRA Food (Belgium) Manufacture of machinery and equipment n.e.c. | €143.0m | €159.5m | €8.86m | 181.1 | 2025 |
| 16 | Medpace Belgium Activities of head offices and management consultancy | €8.88m | €21.6m | €3.43m | 178.2 | 2025 |
| 17 | integrated DNA technologies Manufacture of chemicals and chemical products | €27.4m | €57.2m | €15.4m | 175.8 | 2025 |
| 18 | UC Leuven Education | €102.9m | €85.7m | €62.9m | 174.9 | 2025 |
| 19 | Wonen en Werken Tewerkstelling Social work activities without accommodation | €5.32m | €3.39m | €3.20m | 174.6 | 2025 |
| 20 | Camco Technologies Architectural and engineering activities; technical testing and analysis | €40.2m | €37.4m | €5.84m | 170.4 | 2025 |
Headcount reported by the company for all its sites: the jobs may be located elsewhere.
← All companies in Leuven (Heverlee)
Frequently asked questions
Who is the largest employer in Leuven (Heverlee)?
Interuniversitair Micro-Electronica Centrum, with 2,904.3 full-time equivalents reported (financial year 2025). These jobs may be located outside the municipality.
How many companies in Leuven (Heverlee) report employees?
498 out of 1,656, in accounts less than 3 years old.
Analyse companies in Leuven (Heverlee)
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Open the full file →Active companies (legal entities) that have filed at least one set of annual accounts, based on the Crossroads Bank for Enterprises and the National Bank of Belgium. The sector is the main activity in the register; the municipality is that of the registered office. Data updated on 11 Nov 2026.