Company lists · Data refreshed September 2026
Top 16 Sustainable venture capital firms based in Austria
RevenueBase identified 36 sustainable venture capital firms headquartered in Austria as of September 2026 and tracks 173 professional contacts across them, including 57 with verified work emails and 7 with mobile numbers. Vienna is the largest hub.
This list covers sustainable venture capital firms headquartered in Austria, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 6, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 16 largest sustainable venture capital firms based in Austria
Ranked by team size| # | Company | RevenueBase Smart Search | Contacts | ||
|---|---|---|---|---|---|
| 1 | Partial evidence | 31 contacts → | |||
“At Venionaire Capital, we are more than investors – we are dedicated partners in growth.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 2 | Indirect evidence | 22 contacts → | |||
“We connect investors with high-growth startups, handling the entire investment process.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 3 | Strong evidence | 20 contacts → | |||
“APEX Ventures is a European venture capital firm focusing on deep tech companies.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 4 | Strong evidence | 11 contacts → | |||
“tecnet equity is an Austrian venture capital fund investing in innovative, high-tech startup companies with potential for significant growth.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 5 | Indirect evidence | 9 contacts → | |||
Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 6 | Indirect evidence | 8 contacts → | |||
“Wir leben in einer Zeitenwende.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 7 | Strong evidence | 5 contacts → | |||
“A purpose-driven global investment organisation: Mpoweru is more than a venture capital firm; we are architects of transformative change and catalysts for global innovation.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 8 | Indirect evidence | 5 contacts → | |||
“Epoona specializes in investing and developing small- and medium sized technology companies with a focus in the climate & industrial tech sectors.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 9 | Partial evidence | 4 contacts → | |||
“Sustainable investments in sustainable energy – made in Austria” • We are an that operates internationally and specializes in investments in renewable energy.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 10 | Indirect evidence | 4 contacts → | |||
“World’s oceans provide plenty renewable resources for nutrition, energy production and as raw materials.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 11 | Indirect evidence | 4 contacts → | |||
“At PUSH, we are committed to combat climate change and transform healthcare.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 12 | Indirect evidence | 3 contacts → | |||
“We invest in great ideas in the energy, robotics, health and cloud software sectors.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 13 | Strong evidence | 3 contacts → | |||
“SART Capital Partners is a private equity GP for sustainability-driven buyout investments into special opportunities, secondaries and underperforming assets in the lower…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 14 | Strong evidence | 1 contacts → | |||
“We are a private equity and venture capital investment group, specialising in innovative, technology-driven companies across various industries.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 15 | Partial evidence | 1 contacts → | |||
“Since 2017, Honestas Capital has been helping innovative startups realize their full potential.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 16 | Indirect evidence | 1 contacts → | |||
“Buzzard Energy is an Austrian independent investment firm focused on the European energy and cleantech sector.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: sustainable venture capital firms. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names sustainable venture capital firms.
- Partial evidence
- Its own public description names part of sustainable venture capital firms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name sustainable venture capital firms. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 16 of 36 sustainable venture capital firms based in Austria
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Sustainable venture capital firms based in Austria at a glance
As of Sep 6, 2026Companies by employee count
Freshness & accuracy
How recently the business emails on this list were verified
Email last verified
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among sustainable venture capital firms, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in Austria whose own description of what they do matches “sustainable venture capital firms”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names sustainable venture capital firms), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among sustainable venture capital firms, and records with no verified work email. Companies headquartered outside Austria are excluded even when they keep an office there.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every listed company carries at least one verified work email, 57 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 6, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names sustainable venture capital firms, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many sustainable venture capital firms are there based in Austria?
RevenueBase identified 36 sustainable venture capital firms headquartered in Austria as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
Venionaire Capital AG, headquartered in Austria, tops this list with the largest team on record.
Which city has the most sustainable venture capital firms?
Vienna leads with 7 headquartered companies, followed by Wien (6) and Graz (3).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 57 verified decision-maker contacts tracked across these 36 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 6, 2026.
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About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
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