Phillip Henry Muller (born January 2, 1956) is a Marshallese politician and diplomat.
[1] From 1982 to 1984, Muller was the Deputy Minister of Foreign Affairs for the Marshall Islands.
In 1984, he was elected to the Legislature of the Marshall Islands from the Nitijela constituency.
On 25 June 2008, Muller was appointed the Permanent Representative of the Marshall Islands to the United Nations in New York City.
Muller is an alumnus of Rockhurst College in Kansas City, Missouri, United States.