Contact Us

Headquarters

200 East Hardin Street
Findlay, Ohio 45840

Phone: +1 419.422.2121

Other Contacts

Investor Relations

(419) 421-2071
[email protected]

View our Unitholder Services.

Media Relations

(419) 421-3577
[email protected]

Suppliers

Potential suppliers should fill out a Supplier Registration Request.

Pipeline Safety and Public Awareness

Find pipeline contacts and important pipeline safety information for MPLX Natural Gas and NGL Services.

Find pipeline contacts and important pipeline safety information for MPLX subsidiary Marathon Pipe Line.

Integrity Helpline

Toll-free telephone number: (855) 857-5700
Report online at our Fueling Integrity website.