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Critical infrastructure operators headquartered in Hanover

Tamtam tracks 25 critical infrastructure operators headquartered in Hanover. This list ranks all of them by number of employees on LinkedIn, led by HDI International, HDI Global SE and Hannover Re. Their median headcount is 603. Half of them were founded in 1919 or later.

🇩🇪 Hanover25 companiesUpdated Nov 2, 2026
#CompanyIndustryHeadquarters EmployeesFounded
1
HDI Internationaltalanx.com

A division of Talanx Group offering non-life and life insurance products outside Germany, operating in Europe and Latin America through various distribution channels

Insurance 🇩🇪 Hanover 4,807 n/a
2
HDI Global SEhdi.global

Providing tailored insurance and risk management solutions for SMEs, corporations, and multinational clients across diverse industries worldwide.

Insurance 🇩🇪 Hanover 4,521 1903
3
Hannover Rehannover-re.com

Global reinsurer offering property, casualty, life, and health reinsurance with strong financial ratings and innovative risk solutions worldwide.

Insurance 🇩🇪 Hanover 3,082 1966
4
HDI Groupcareers.hdi.group

A big European insurance group with a 120-year tradition, specializing in industrial and private insurance, fostering innovation, and promoting entrepreneurship

Insurance 🇩🇪 Hanover 2,934 n/a
5
Medizinische Hochschule Hannovermhh.de

A company based in Lower Saxony, Germany within the higher education sector, specializing in medical sciences and research

Higher Education 🇩🇪 Hanover 2,541 1965
6
NORD/LBnordlb.de

Leading German commercial bank providing financing for medium-sized businesses, energy, infrastructure, and real estate projects, with global presence and focus on green financing.

Banking 🇩🇪 Hanover 2,114 n/a
7
KKH Kaufmännische Krankenkassekkh.de

Provider of statutory health insurance in Germany, supporting individuals and families with illness and preventive care, delivering personalized service and healthcare benefits for policyholders

Insurance 🇩🇪 Hanover 1,671 1890
8
KRH Klinikum Region Hannoverkrh.de

A network of 10 hospitals providing innovative healthcare to improve the well-being of patients in Hannover and beyond, with a focus on local medicine and high-quality care

Hospitals and Health Care 🇩🇪 Hanover 1,192 n/a
9
enercityenercity.de

One of the largest energy service providers in Germany supplying electricity, heat, natural gas, and drinking water with a focus on sustainability and customer support

Renewable Energy Power Generation 🇩🇪 Hanover 998 1970
10
VGH Versicherungenvgh.de

Largest insurance provider in Lower Saxony with extensive regional network, offering private and corporate insurance services and strong community focus.

Insurance 🇩🇪 Hanover 836 1750
11
VHV Gruppevhv-gruppe.de

Specialists in insurance, pension, and asset management with brands VHV Versicherungen and Hannoversche Partner for insured individuals and brokers, earning 32 billion Euros in premiums

Insurance 🇩🇪 Hanover 701 1919
12
Hannover Medical Schoolmhh.de

A leading state institution in Lower Saxony for research, teaching, and superior healthcare in human medicine and dentistry, with integrated services on campus

Higher Education 🇩🇪 Hanover 697 1961
13
Neptune Energyneptuneenergy.de

Extraction of natural gas and crude oil in Germany, focusing on low emissions, sustainability, and future energy solutions like lithium and geothermal.

Oil and Gas 🇩🇪 Hanover 603 n/a
14
Sparkasse Hannoversparkasse-hannover.de

With over 200 years of experience, this financial institution in Hannover supports businesses and invests in community projects for sustainable development

Financial Services 🇩🇪 Hanover 594 n/a
15
Swiss Life Deutschlandswisslife.de

Leading provider of financial and retirement solutions, offering flexible insurance products and services to individuals and businesses through various brands Headquarters in Zurich

Insurance 🇩🇪 Hanover 589 1866
16
VHV Versicherungenvhv-partner.de

A leading specialist insurer in construction, auto, liability, life insurance, and retirement planning Committed to evolving products to meet changing needs and offering strong customer service

Insurance 🇩🇪 Hanover 569 1919
17
Hannoversche Volksbank eGhannoversche-volksbank.de

A regional cooperative bank based in Hannover, Germany, with a large customer base and comprehensive financial services, including 34 branches

Financial Services 🇩🇪 Hanover 356 1860
18
DIAKOVERE gGmbHdiakovere.de

A leading non-profit healthcare and social services organization in Northern Germany, offering a wide range of services from hospitals to rehabilitation and hospice care

Hospitals and Health Care 🇩🇪 Hanover 352 2016
19
Norddeutsche Landesbanknordlb.de

A leading universal bank in Northern Germany offering a wide range of financial services to individuals, businesses, public sector, and international projects in various sectors

Banking 🇩🇪 Hanover 344 n/a
20
Talanxtalanx.com

Major European insurance group offering industrial and retail insurance, reinsurance, bancassurance, asset management, and financial services through various brands and divisions worldwide

Insurance 🇩🇪 Hanover 330 1903
21
PreussenElektrapreussenelektra.de

A part of the EON Group, we are responsible for decommissioning eight nuclear power plants in Germany, transitioning to future-oriented solutions at our sites

Utilities 🇩🇪 Hanover 329 1927
22
NBank - Investitions- und Förderbank Niedersachsennbank.de

Providing support and solutions for individuals, businesses, and communities in Lower Saxony to foster growth and quality of life

Financial Services 🇩🇪 Hanover 321 2004
23
Sparda-Bank Hannoversparda-h.de

A leading cooperative bank in Northern Germany, offering extensive services in mortgage financing and investment tailored to individual customer needs

Banking 🇩🇪 Hanover 105 1903
24
LBS Norddeutsche Landesbausparkasse Berlin-Hannoverlbs-nord.de

This company, in partnership with Sparkassen-Finanzgruppe, helps fulfill housing dreams through various services like LBS home savings, real estate transactions, and financing

Financial Services 🇩🇪 Hanover 92 1929
25
PSD Bank Hannover eGpsd-hannover.de

A member of the national PSD Bank group, this cooperative institute prioritizes personal financial guidance and support over corporate profits

Banking 🇩🇪 Hanover 33 1872

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How this list is built

Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 2, 2026.

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