POWER OF ATTORNEY

	The undersigned hereby authorizes and designates each of Kevin M. McDonald,
Elisa D. Watts and Sam A. Mazzu (the "Attorneys") as her fully authorized
attorney for the purpose of signing and filing on behalf of the undersigned all
forms which are permitted or required to be filed pursuant to Section 16 of the
Securities Exchange Act of 1934, as amended (the "Forms") concerning the
undersigned's interest in securities of Marathon Oil Corporation ("MOC") and/or
the undersigned's status with respect to MOC.  This Power of Attorney authorizes
each of the Attorneys to sign and file the Forms on behalf of the undersigned
from the date hereof until the undersigned ceases to be subject to Section 16 of
the Securities Exchange Act of 1934 by virtue of having been an officer of MOC.


/s/ Sylvia J. Kerrigan
    Sylvia J. Kerrigan

April 29, 2015