Company lists · Data refreshed September 2026

Top 25 Micro venture capital firms based in Boston, United States

Name: Micro venture capital firms based in Boston, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 5, 2026 158 companies tracked

RevenueBase identified 158 micro venture capital firms headquartered in Boston, United States as of September 2026 and tracks 2,011 professional contacts across them, including 685 with verified work emails. San Francisco is the largest hub.

This list covers micro venture capital firms headquartered in Boston, United States, 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, how directly it supports the match, and when it was last checked. Data refreshed September 5, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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.

How to read this list HQ checked on every row Match evidence on every row Refreshed Sep 5, 2026 86% judged on-target in blind review

158Companies

2,011Contacts tracked

685Verified emails

Unlock all 158 companies Free signup · no credit card · 500 free credits

The 25 largest micro venture capital firms based in Boston, United States

Ranked by team size

Top 25 of 158 micro venture capital firms based in Boston, United States, ranked by team size, largest first. Data refreshed Sep 5, 2026. Evidence rates how directly each company's own description names micro venture capital firms: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#	Company	Headquarters	Employees	Contacts
1	Battery VenturesIndirect evidence	Boston, MA, United StatesHQ checked Sep 5, 2026	51-200	211
	“Battery invests in potentially cutting-edge, category-defining businesses in markets including application software, IT infrastructure technologies, consumer-internet and mobile…” Source: company website · checked Sep 5, 2026
2	Third Rock VenturesIndirect evidence	Boston, MA, United StatesHQ checked Sep 5, 2026	51-200	113
	“We discover, launch and build great companies based on bold ideas that meet at the intersection of science, strategy, business and medicine – where transformational science meets…” Source: company website · checked Sep 5, 2026
3	FA Technology VenturesStrong evidence	Boston, MA, United StatesHQ checked Sep 5, 2026	n/a	109
	“FA Technology Ventures is an independent, established venture capital firm.” Source: company website · checked Sep 5, 2026
4	Underscore VCStrong evidence	Boston, MA, United StatesHQ checked Sep 5, 2026	11-50	75
	“Underscore VC is a Boston-based venture capital firm backing bold B2B software entrepreneurs at pre-Seed and Seed.” Source: company website · checked Sep 5, 2026
5	Polaris PartnersIndirect evidence	Boston, MA, United StatesHQ checked Sep 5, 2026	11-50	55
	“Exceptional entrepreneurs.” Source: company website · checked Sep 5, 2026
6	Clean Energy VenturesStrong evidence	Boston, MA, United StatesHQ checked Sep 5, 2026	11-50	54
	“Clean Energy Ventures is a venture capital firm focused on investing in companies commercializing disruptive advanced energy technologies and business model innovations that can…” Source: company website · checked Sep 5, 2026
7	OpenviewStrong evidence	Boston, MA, United StatesHQ checked Sep 5, 2026	11-50	47
	“OpenView is a venture capital firm on a mission to change the way the world works.” Source: company website · checked Sep 5, 2026
8	Glasswing VenturesStrong evidence	Boston, MA, United StatesHQ checked Sep 5, 2026	11-50	45
	“Glasswing Ventures is an early stage venture capital firm investing in the next generation of AI and frontier technology startups that are enabling the rise of the intelligent…” Source: company website · checked Sep 5, 2026
9	Companyon VenturesIndirect evidence	Boston, MA, United StatesHQ checked Sep 5, 2026	n/a	41
	“We back just a few fast-moving, founder-led B2B startups each year.” Source: company website · checked Sep 5, 2026
10	Pillar VCIndirect evidence	Boston, MA, United StatesHQ checked Sep 5, 2026	11-50	40
	“Pillar VC is with you from the beginning.” Source: company website · checked Sep 5, 2026
11	M33 GrowthPartial evidence	Boston, MA, United StatesHQ checked Sep 5, 2026	11-50	38
	“M33 Growth is a venture and growth stage investment firm that seeks to partner with founders and CEOs to rapidly scale their companies and break through as industry leaders.” Source: company website · checked Sep 5, 2026
12	PJCStrong evidence	Boston, MA, United StatesHQ checked Sep 5, 2026	n/a	38
	“PJC is an early-stage venture capital firm focused on investing in, supporting, and building relationships with entrepreneurs who are creating the future.” Source: company website · checked Sep 5, 2026
13	Venture GuidesPartial evidence	Boston, MA, United StatesHQ checked Sep 5, 2026	11-50	36
	“Venture Guides is an early-stage infrastructure software investment firm with a unique team based approach that has resulted in over 80% of portfolio companies generating positive…” Source: company website · checked Sep 5, 2026
14	Mendoza VenturesPartial evidence	Boston, MA, United StatesHQ checked Sep 5, 2026	n/a	34
	“Firm overview Mendoza Ventures is an early-stage and growth venture fund based in Boston.” Source: company website · checked Sep 5, 2026
15	ScroobiousIndirect evidence	Boston, MA, United StatesHQ checked Sep 5, 2026	1-10	30
	“Fundraising isn’t a numbers game.” Source: company website · checked Sep 5, 2026
16	ElephantStrong evidence	Boston, MA, United StatesHQ checked Sep 5, 2026	11-50	27
	“Elephant is a venture capital firm focused on investing in fast-growing, capital-efficient technology companies.” Source: company website · checked Sep 5, 2026
17	Digital Fuel CapitalIndirect evidence	Boston, MA, United StatesHQ checked Sep 5, 2026	11-50	26
	“We are passionate about digital marketing: the marriage of science and art, the ability to test and innovate rapidly and the opportunities to serve distinct consumer interests and…” Source: company website · checked Sep 5, 2026
18	Learnlaunch Fund AcceleratorIndirect evidence	Boston, MA, United StatesHQ checked Sep 5, 2026	1-10	23
	“LearnLaunch Fund + Accelerator is an impact-driven VC fund and accelerator that invests in and supports entrepreneurs on the mission to transform education positively.” Source: company website · checked Sep 5, 2026
19	Equal Opportunity VenturesPartial evidence	Boston, MA, United StatesHQ checked Sep 5, 2026	1-10	21
	“EO Ventures invests in early-stage businesses that increase opportunity in America.” Source: company website · checked Sep 5, 2026
20	January VenturesPartial evidence	Boston, MA, United StatesHQ checked Sep 5, 2026	1-10	21
	“January Ventures is a VC fund focused on angel/pre-seed in the US & Europe.” Source: company website · checked Sep 5, 2026
21	SSC Venture PartnersStrong evidence	Boston, MA, United StatesHQ checked Sep 5, 2026	1-10	20
	“SSC Venture Partners is a venture capital fund made up of BC alums who love entrepreneurship and want to see BC alumni and students successfully launch their own companies.” Source: company website · checked Sep 5, 2026
22	Techrupt InnovationsPartial evidence	Boston, MA, United StatesHQ checked Sep 5, 2026	51-200	19
	“We are a venture studio building and investing in transformative companies across ed tech, AI, consumer products, and B2B SaaS.” Source: company website · checked Sep 5, 2026
23	4 59 Newco, A 5am Ventures CompanyPartial evidence	Boston, MA, United StatesHQ checked Sep 5, 2026	11-50	18
	“4:59 is a hands-on internal effort of 5AM Ventures to discover, incubate, and fund breakthrough science.” Source: company website · checked Sep 5, 2026
24	Suffolk TechnologiesStrong evidence	Boston, MA, United StatesHQ checked Sep 5, 2026	1-10	15
	“Suffolk Technologies is a leading venture capital platform investing in ConTech, PropTech and InfraTech startups transforming the $12T built environment sector.” Source: company website · checked Sep 5, 2026
25	Massmutual VenturesIndirect evidence	Boston, MA, United StatesHQ checked Sep 5, 2026	11-50	15
	“Our Culture: At MMV, we’re a team of fair, dedicated investors and operators who put integrity, collaboration, and teamwork at the forefront of what we do.” Source: company website · checked Sep 5, 2026

Showing 25 of 158 micro venture capital firms based in Boston, United States

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 685 reachable decision-makers.

Free signup · no credit card

See all 158 companies

Micro venture capital firms based in Boston, United States at a glance

As of Sep 5, 2026

1-10Median size (employees)

San FranciscoLargest hub · 654 HQs

Contacts with mobile numbers

Sep 5, 2026Data refreshed

Companies by employee count

1-10

118

11-50

51-200

201-500

Email recency for this list is measured across the whole United States list rather than this city, so it is reported there. Company counts and contact totals on this page are exact for Boston, over 158 companies.

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 micro venture capital firms, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Boston, United States whose own description of what they do matches “micro venture capital firms”. Matching reads each company's description, not its industry code or its name.
What we exclude: Companies whose own description does not clearly place them among micro venture capital firms, and records with no verified work email. Companies headquartered outside Boston 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 an evidence 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, 685 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 5, 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.

Micro venture capital firms by metro in the United States

Frequently asked

How many micro venture capital firms are there based in Boston, United States?

RevenueBase identified 158 micro venture capital firms headquartered in Boston, United States 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?

Battery Ventures, headquartered in Boston, tops this list with the largest team on record.

Which city has the most micro venture capital firms?

San Francisco leads with 654 headquartered companies, followed by New York (632) and Los Angeles (208).

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 685 verified decision-maker contacts tracked across these 158 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 5, 2026.

Ready to reach these companies? Verified emails and direct dials for all 158 micro venture capital firms based in Boston, United States. Start with a free account, no credit card.

Get the full list

Related lists

Micro venture capital firms by geography

Browse the directory

Browse: Companies home · Micro venture capital firms in United States · All United States lists · All Micro venture capital firms lists · New lists

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 SmartSearch, 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.