American petroleum institute logo

American petroleum institute Headquarters & Office Locations

Verified data Standards Organizations 501 employees 25 offices worldwide

Headquarters: Washington, D.C., District of Columbia, United States, Washington, Washington 20005, United States

Data last updated August 2026 · Sourced via GraphIQ

Headquarters
Washington, WA
United States
Total offices
25
across 2 countries
Employees
501
est. 2026

American petroleum institute headquarters details

Washington, D.C., District of Columbia, United States

Washington

Washington

20005

United States

1919

All American petroleum institute office locations

25 total
City State / region Country Type
Washington HQ Washington United States Headquarters

About American petroleum institute

American petroleum institute (Private) is headquartered in Washington, Washington, United States. Founded in 1919, the company operates across 2 countries with approximately 501 employees worldwide.

Where is American petroleum institute's main office?

American petroleum institute's main headquarters office is located at Washington, D.C., District of Columbia, United States, Washington, Washington 20005. This serves as the company's primary corporate address and is home to its executive leadership team.

American petroleum institute regional offices

Beyond its headquarters in Washington, American petroleum institute maintains 25 offices across 2 countries. Regional offices span 2 countries.

American petroleum institute contact information

The main switchboard for American petroleum institute headquarters can be reached at 12026828000. For investor relations, visit api.org/investor-relations.

What does American petroleum institute do?

American Petroleum Institute operates as representation for American oil and natural gas companies. The Company provides advocacy services for negotiations with government, legal, and regulatory agencies as well as research into economics effects, establishment and certification of industry standards, and education outreach.

Frequently asked questions

Where is American petroleum institute headquarters?

American petroleum institute's headquarters is located at Washington, D.C., District of Columbia, United States, Washington, Washington 20005, United States.

How many offices does American petroleum institute have?

American petroleum institute operates 25 offices across 2 countries as of 2026.

What is American petroleum institute's corporate address?

The official corporate address is Washington, D.C., District of Columbia, United States, Washington, Washington 20005.

When was American petroleum institute founded?

American petroleum institute was founded in 1919 and has grown to employ approximately 501 people worldwide.

What is American petroleum institute's phone number?

The main phone number for American petroleum institute headquarters is 12026828000.

Find more info on American petroleum institute using GraphIQ

Revenue teams waste hours stitching together data from a dozen tools before a single rep can make a meaningful touch. GraphIQ fixes that. Whether you're building target account lists, routing inbound leads, or keeping your CRM clean as American petroleum institute's structure changes, GraphIQ gives your RevOps team a single source of truth — automatically.

From territory planning and lead scoring to handoff workflows and pipeline hygiene, our platform connects the data your GTM engine needs to run without friction. Sign up today and see how GraphIQ helps your revenue team spend less time finding information and more time acting on it.

300M+Companies tracked
370M+Employees
2TNews articles & events