John Barden Shadegg (/ˈʃædɪɡ/; born October 22, 1949) is an American politician and former U.S. representative for Arizona's 3rd congressional district, serving from 1995 until 2011.

On January 13, 2006, Shadegg officially joined the race for the House Majority Leader as a compromise alternative candidate to Representatives Roy Blunt and John Boehner.

[17] On October 14, 2009, Shadegg joined with three fellow Representatives in calling for the investigation of CAIR (the Council on American-Islamic Relations) over allegations of trying to plant "spies", based on a CAIR memo indicating that they "will develop national initiatives such as Lobby Day, and placing Muslim interns in Congressional offices."

The request came in the wake of the publication of a book, Muslim Mafia, the foreword of which had been penned by Congresswoman Sue Myrick, that portrayed CAIR as a subversive organization allied with international terrorists.

[18] CAIR has countered that these initiatives are extensively used by all advocacy groups and accused Shadegg and his colleagues of intending to intimidate American Muslims who "take part in the political process and exercise their rights.

"[23] Shadegg's spokeswoman later clarified the remark, explaining that the Congressman believes that "Forcing them [health insurance companies] to compete, even through a public option, would be better than an individual mandate which will not work.

"[23] On September 29, 2008, Shadegg voted against the Emergency Economic Stabilization Act of 2008 which created the Troubled Assets Relief Program.

"[26] Shadegg entered the Republican primary race for Arizona's 4th District in 1994 after four-term incumbent Jon Kyl began what turned out to be a successful run for the United States Senate.

Shadegg announced on February 11, 2008, that he would not run for an eighth term, saying that he wanted to "seek a new challenge in a different venue to advance the cause of freedom."

[27][28] Although it was speculated that he would run for the United States Senate in 2010 if John McCain had become president,[29] Shadegg had expressed his intention to leave public life and return to the private sector[28] before changing his mind.

"[30] Early in 2011, Shaddeg joined the Goldwater Institute in Phoenix as a senior fellow; but he is no longer formally affiliated with the group.

[31] In 2011, Shadegg joined the law firm of Steptoe & Johnson LLP as a partner, working out of their Washington, DC, and Phoenix offices.