Edward Lopez "Ed" Pastor (born June 28, 1943) is the U.S. Representative for Arizona's 4th congressional district, serving since 1991. He is a member of the Democratic Party. The district includes most of southern, western, and downtown Phoenix, along with a portion of Glendale.

Pastor was born in Claypool, Arizona, as the oldest of three children. After high school, he was educated at Arizona State University. He became a chemistry teacher at North High School in Phoenix and later went on to work as deputy director of the community service group Guadalupe Organization Inc. After returning to ASU to earn a law degree, he became an assistant to Arizona Governor Raul Castro. In 1976, Pastor was elected to the Maricopa County Board of Supervisors, and he served three terms in that role as a county executive.

In 1991, Pastor entered a special election to succeed 28-year incumbent Democrat Mo Udall in the 2nd District, which then comprised the southwestern part of Arizona including parts of Phoenix and half of Tucson. He narrowly won a four-way Democratic primary, defeating his closest challenger, Tucson mayor Tom Volgy, by 1,800 votes. He then won the special election a month later to become the first Latino to represent Arizona in Congress. At the time, the 2nd was the only Democratic bastion in Arizona. He easily won a full term in 1992. He was reelected four times without substantive Republican opposition, never dropping below 60% of the vote.