Company lists · Data verified August 2026

Top 23 B2B lead generation companies based in San Francisco, United States

Name: B2B lead generation companies based in San Francisco, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 86 companies tracked

There are 86 B2B lead generation companies headquartered in San Francisco, United States (RevenueBase, August 2026). RevenueBase tracks 1,946 professional contacts across them, including 447 with verified work emails and 337 with mobile numbers. New York is the largest hub.

This list covers B2B lead generation companies headquartered in San Francisco, United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Data current as of August 28, 2026.

86Companies

1,946Contacts tracked

447Verified emails

337Mobile numbers

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The 23 largest B2B lead generation companies based in San Francisco, United States

Ranked by team size

Top 23 of 86 B2B lead generation companies based in San Francisco, United States, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	S2w Media	San Francisco, CA	501-1,000	798	127
2	Warmly	San Francisco	51-200	138	42
3	Green Leads, LLC	San Francisco, CA	51-200	100	13
4	Levelup Leads	San Francisco, CA	51-200	56	19
5	Throxy YC P25	San Francisco, CA	11-50	56	9
6	Dealsignal	San Francisco, CA	51-200	31	6
7	Sally AI Sales Representative	San Francisco, CA	11-50	27	3
8	Vendisys Generate More Pipeline And Revenue At Scale	San Francisco, CA	11-50	17	4
9	Leadbay YC F25	San Francisco, CA	1-10	14	7
10	Revenu	San Francisco, CA	1-10	14	3
11	Sales Driven Marketing	San Francisco, CA	11-50	7	2
12	KEN	San Francisco, CA	11-50	7	1
13	Contora	San Francisco, CA	1-10	5	2
14	Resultspoint	San Francisco, CA	1-10	5	1
15	Cold Email Hackers	San Francisco, CA	1-10	4	1
16	Espresso B2B Marketing	San Francisco, CA	1-10	3	1
17	Digital Branding LLC	San Francisco, CA	1-10	2	1
18	Sourcinggrowth	San Francisco, CA	1-10	2	1
19	Muraena	San Francisco, CA	1-10	2	1
20	Dominate Media	San Francisco, CA	1-10	1	1
21	Service Marketing USA	San Francisco, CA	1-10	1	1
22	Ascension Leads	San Francisco, CA	1-10	1	1
23	FOX Content	San Francisco	1-10	1	1

Showing 23 of 86 B2B lead generation companies based in San Francisco, United States

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B2B lead generation companies based in San Francisco, United States at a glance

As of Aug 28, 2026

1-10Median size (employees)

New YorkLargest hub · 172 HQs

337Contacts with mobile numbers

0Emails re-verified in last 30 days

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

B2B lead generation companies by metro in the United States

Metro	Companies
B2B lead generation companies in New York	172
B2B lead generation companies in Sheridan	95
B2B lead generation companies in Los Angeles	92
B2B lead generation companies in San Francisco	86
B2B lead generation companies in Miami	85
B2B lead generation companies in Austin	72
B2B lead generation companies in Houston	61

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “B2B lead generation companies”, with match quality audited by blind human judging, and headquartered in San Francisco, United States.
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: Contact records re-verify on a rolling cadence; 0 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many B2B lead generation companies are there based in San Francisco, United States?

There are 86 B2B lead generation companies headquartered in San Francisco, United States as of August 2026 (RevenueBase).

What is the largest company on this list?

S2w Media, headquartered in San Francisco, tops this list with the largest team on record.

Which city has the most B2B lead generation companies?

New York leads with 172 headquartered companies, followed by Sheridan (95) and Los Angeles (92).

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 447 verified decision-maker contacts tracked across these 86 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.