50 Startup Investors in Boston (2026)
143 investor organizations in Boston are in the Round Funded catalog: venture capital firms, accelerators and incubators. Below are the top 50 by investments on record: what each one backs, where it is based, how many startups it has invested in, and a way to reach the team behind each once you sign up.
- Investors in the catalog
- 143 in Boston
- Top sectors
- Healthcare & Biotech, Biotech & Pharma, and Artificial Intelligence
- Median investments
- 71 investments
- This list
- Updated for 2026
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The top 50 startup investors in Boston, by investments on record
Battery VenturesBattery Ventures is an private equity and venture capital firm that focuses on technology.BostonSaaS & EnterpriseArtificial IntelligenceDeveloper Tools & Data530 investments
F-PrimeF-Prime is a venture capital firm investing in healthcare and technology.CambridgeHealthcare & BiotechMedTech & Medical DevicesDigital Health & HealthTech400 investments
Atlas VentureAtlas Venture creates and invests in biotech startup companies with seed and early stage venture investments.CambridgeBiotech & PharmaHealthcare & Biotech306 investments
MIT designXMITdesignX is the venture accelerator of the MIT School of Architecture and Planning.CambridgePropTech & Real EstateClimate & EnergyMobility & Logistics250 investments
MassChallenge HealthTechMassChallenge HealthTech is a startup accelerator program that supports high-impact digital health startups.BostonHealthcare & BiotechDigital Health & HealthTechMedTech & Medical Devices200 investments
AccompliceAccomplice is a seed-led venture capital firm that primarily invests in technology startup companies.CambridgeCybersecurityDeveloper Tools & DataSaaS & Enterprise163 investments
SR OneSR One is the corporate venture capital arm of GlaxoSmithKline.CambridgeHealthcare & BiotechBiotech & PharmaMedTech & Medical Devices159 investmentsThat is 10 of 50.
Every firm and program below has a contact in the catalog. Create a free account to see them all.
The EngineThe Engine is an enterprise designed to support new companies working on scientific and technological innovation.CambridgeClimate & EnergyHealthcare & BiotechHardware & Deep Tech155 investments
Venture Development CenterThe convergence of life science, healthcare and information technology is creating a new wave of entrepreneurial opportunity in the Boston.BostonHealthcare & BiotechDigital Health & HealthTechBiotech & Pharma116 investments
PharmStarsPharmStars is the pharma-focused accelerator for digital health startups.BostonDigital Health & HealthTechBiotech & PharmaHealthcare & Biotech112 investments
ConvergeConverge is a venture capital firm that invests in B2B technology companies in pre-seed, seed, and Series A investments.CambridgeArtificial IntelligenceSaaS & EnterpriseCybersecurity107 investments
Flagship PioneeringFlagship Pioneering is a venture capital firm that invests in life sciences and healthcare companies.CambridgeBiotech & PharmaHealthcare & BiotechClimate & Energy100 investments
HealthCare VenturesHealthCare Ventures is a life science venture capital firm that invests in early clinical stage companies which transform patient care.CambridgeHealthcare & BiotechBiotech & PharmaDigital Health & HealthTech100 investments
Johnson & Johnson InnovationJJDC finds transformative ideas and helps them mature into real solutions for today's patients.CambridgeBiotech & PharmaMedTech & Medical DevicesDigital Health & HealthTech100 investments
MassMutual VenturesMMV is a multi-stage, global venture capital firm investing in enterprise software, cybersecurity, financial technology, and digital health.BostonSaaS & EnterpriseClimate & EnergyFintech84 investments
Castle Island VenturesCastle Island Ventures is a venture capital firm,CambridgeCrypto & Web3FintechPayments76 investments
Safar PartnersSafar Partners is a seed- to growth-stage venture fund.CambridgeClimate & EnergyRobotics & AutomationArtificial Intelligence75 investments
Link VenturesA venture capital firm based in Kendall Square that invests in technical founders developing disruptive AI technologies.CambridgeArtificial IntelligenceSaaS & EnterpriseConsumer & Retail72 investments
Fairhaven Capital PartnersFairhaven Capital (previously TD Capital) is a Cambridge, MA based venture capital firm investing in early stage technology startups.CambridgeSaaS & EnterpriseCybersecurityHardware & Deep Tech71 investments
Mass General Brigham VenturesMass General Brigham Ventures is the venture capital arm of Mass General Brigham that invests in early-stage companies.CambridgeHealthcare & BiotechBiotech & PharmaMedTech & Medical Devices66 investments
Mission BioCapitalMission BioCapital is a life science venture capital firm that invests in early-stage companies.CambridgeHealthcare & BiotechBiotech & PharmaMedTech & Medical Devices60 investments
The Impact SeatThe Impact Seat is a venture capital and management consulting firm.Boston60 investments
Bonbillo LLCA Social Entrepreneurship Bootcamp acceleratorBostonHealthcare & BiotechClimate & EnergyFoodTech & Agriculture43 investments
C10 LabsC10 Labs is a venture studio fund that specializes in reshaping the landscape of AI-first startups.CambridgeArtificial IntelligenceHealthcare & BiotechBiotech & Pharma40 investments
ScaleUp LabsScaleUp Labs aids AI startups with investment and acceleration in venture capital and private equity.CambridgeArtificial IntelligenceHealthcare & BiotechManufacturing & Industrial40 investments
Azolla VenturesAzolla Ventures is an early stage investor in climate breakthroughs that could avert catastrophic climate change.CambridgeClimate & EnergyHardware & Deep TechManufacturing & Industrial40 investments
First Star VenturesInvesting with conviction in visionary, technical founders inventing the future.CambridgeArtificial IntelligenceHealthcare & BiotechClimate & Energy40 investments
BOOSTAccelerator for built world startupsBostonArtificial IntelligenceRobotics & AutomationManufacturing & Industrial38 investments
VentureVilla Inc.At VentureVilla Inc. we are helping German Startup Entrepreneurs to build US companies.BostonFintech38 investments
Agent CapitalA biotech venture capital firm.CambridgeHealthcare & BiotechBiotech & PharmaDigital Health & HealthTech35 investments
Visible VenturesVisible Ventures invests where generational fractures create outsized market opportunities.BostonConsumer & RetailFintechDigital Health & HealthTech33 investments
BlueSwellBlueSwell is an accelerator program run by SeaAhead and the New England Aquarium that supports early-stage ocean and water-focused ventures.CambridgeClimate & EnergyHardware & Deep TechRobotics & Automation32 investments
Ebridge VenturesEbridge Ventures is a business and investment company that provides financing services.BostonArtificial IntelligenceHealthcare & BiotechImpact & Social Enterprise30 investments
Qiming Venture Partners USAQiming Venture Partners is a venture capital firm that offers early-stage healthcare possibilities in highly disruptive platforms.CambridgeBiotech & PharmaDigital Health & HealthTechHealthcare & Biotech30 investments
Intersect VCIntersect VC is an investment firm that invests at early and later-stage companies.CambridgeConsumer Goods (CPG)E-commerce & D2CMarketplace23 investments
Oasis CapitalOasis Capital offers venture capital and private equity services.Cambridge22 investments
Meach Cove CapitalMeach Cove Capital is a venture capital firm.CambridgeFoodTech & AgricultureAgTech & AgricultureClimate & Energy22 investments
DCU FinTech Innovation CenterZero-fee/zero-equity nonprofit fintech accelerator.BostonFintechPaymentsLending & Credit21 investments
Yonjin VentureYonjin Venture is an investment firm specializing in investing in early and mid-stage life science companies.CambridgeHealthcare & BiotechBiotech & PharmaMedTech & Medical Devices20 investmentsPitch the investors that back startups like yours.
Round Funded holds 143 investor organizations in Boston next to 60,000+ investors worldwide, with the contact to reach at each, and the outreach to do it from your own inbox.
How to find the right startup investors in Boston
Start with focus, not fame: the stage each investor takes, the sectors it backs and how many startups it has funded. Shortlist the VC firms that write checks at your stage, add the accelerators and incubators that take companies like yours, and write to each with your traction and your ask in the first three lines. An investor with many deals in your sector is a better first email than a famous name with none.
About this list
This list is part of Round Funded, an investor database and outreach platform for founders. It covers 60,000+ active VCs, angels, family offices and accelerators with verified contacts, lets you send pitches from your own Gmail, and includes a free Data Room for your raise. How this data is built.
Frequently Asked Questions
How many startup investors are there in Boston?
The Round Funded catalog lists 143 investor organizations in Boston: venture capital firms, accelerators and incubators. This page shows the top 50 by investments on record; the count updates as the catalog is refreshed.
How is this list ranked?
By the number of investments on record for each firm or program, then by how complete its profile is. It is a catalog ranking, not an editorial one: an investor with many recorded deals sits above a famous name with few.
How do I pitch startup investors in Boston?
Open each investor's profile for its stage and sector focus first, then pitch the ones that match. VC firms take cold emails with traction up top; accelerators and incubators take applications through their own site. Sign up to see the contact behind each investor and reach them from your own Gmail.
Are these investors still active?
The catalog is refreshed continuously and each profile shows the investments on record. Check an investor's latest deals on its profile before you write, since focus and fund cycles change during the year.
What is Round Funded?
Round Funded is an investor database and outreach platform for startup founders. It lists 60,000+ active investors with verified contacts, filtered to recent investment activity, and lets founders send personalized pitches from their own Gmail, track replies, and share a free Data Room. Round+ starts at $99 per month with a 3-day trial.