William Amborse "Billy" Cundiff (born March 30, 1980) is an American football placekicker who is currently a free agent. He played college football for Drake University, and was signed by the Dallas Cowboys as an undrafted free agent in 2002.
Cundiff attended Harlan Community High School in Harlan, Iowa where he was a three-time All-Iowa quarterback who helped lead the Cyclones to the Class 3A state championship in 1997. He also established state career kicking records for most points (179) and field goals (22), both of which have since been surpassed.  He was also a starting point guard in basketball. In track, he was a state-qualifier in the high jump (PR of 1.98 meters).
Cundiff played for the Drake Bulldogs football team of Drake University, where he broke five Pioneer Football League (PFL) career records including most points (284), field goals (49) and points after touchdown (137). He made eight field goals over 50 yards during his career with the Bulldogs, including a PFL-record 62-yarder as a junior in 2000 against San Diego.  He also was part of the Drake University Men's Basketball team during his time at Drake. He played sparingly, partly due to several members of the team being ruled academically ineligible. He earned a Bachelor of Arts degree in biology in 2003. He was presented the highest honor for a student-athlete at the university when he received the Drake Double D Award on February 12, 2012. 
Cundiff was brought to the 2002 training camp as an undrafted free agent, and won out over incumbent Tim Seder as the team's kicker. As a rookie he won the NFC Special Teams Player of the Week award, after making a 48-yard field goal on the game’s final play for a 13-10 victory against the St. Louis Rams.
He tied a then-record seven field goals in a game against the New York Giants on Monday Night Football on September 15, 2003.  That year he became the second player ( Chris Boniol was first) in team history to win the NFC Special Teams Player of the Week two times in a season. 
In 2005, which would have been his fourth season with the team, he was waived/injured during training camp following a quadriceps injury, and briefly replaced by kickoff specialist José Cortéz, who had not been expected to make the team. Cundiff was later re-signed on November 19, 2005 (directly following the mandatory period after an injury waiver) having recovered from his training camp injury. He replaced kicker Shaun Suisham, in the hope of providing greater consistency to the Cowboys' special teams. In his first game back with the Cowboys, Cundiff made a 56-yard field goal at the end of the first half to set a record for longest field goal in franchise history. Cundiff played six games that season before being released by the Cowboys on December 26, 2005 after missing two field goals in a critical game against the Carolina Panthers. The Cowboys re-signed Suisham to replace him for the season finale. 
Tampa Bay Buccaneers
Green Bay Packers
New Orleans Saints
Kansas City Chiefs
In January 2008, Cundiff was signed by the Kansas City Chiefs to a two-year contract. He was released prior to the regular season.
Cundiff was signed by the Cleveland Browns on September 26, 2009 after an injury to placekicker Phil Dawson.  Cundiff beat out Matt Bryant in a workout with the Browns and was signed after the Browns first choice of Matt Stover declined to sign with the team.  In week 5 of the 2009 NFL season, Cundiff hit the game-winning field goal to help the Browns beat the Buffalo Bills, 6-3. He was waived on November 3, 2009.
Cundiff re-signed with the Ravens to return for the 2010 season. Cundiff was voted to the 2011 Pro Bowl as the AFC placekicker after successfully completing 26 of 29 field goal attempts and a league-high 40 touchbacks. On January 2, 2011, Cundiff recorded his league-leading 40th touchback, which tied the NFL record set by Mitch Berger. Cundiff played at home in the outdoor M&T Bank Stadium and set the record after the instatement of the K-ball rule. He averaged 71.1 yards per kickoff to lead the league and had touchbacks on 51.3% of his kickoffs.
Cundiff signed a five-year, $15 million contract to become Baltimore's long-term kicker on January 23, 2011. 
Perhaps the most famous kick of Cundiff's career, in the closing seconds of the 2012 AFC Championship Game on January 22 against the New England Patriots, Cundiff missed a 32-yard field goal that would have tied the game, and the Ravens lost the game to the Patriots 23-20. 
Cundiff was signed by the Washington Redskins on August 28, 2012.   In Week 2 against the St. Louis Rams, he attempted a 62-yard field goal on the last play of the game to put the game into overtime, but missed.  Two weeks later against the Tampa Bay Buccaneers, after being zero for three in his field goal attempts, which consisted of a 41-yarder, 57-yarder, and 31-yarder, Cundiff made a 41-yard field goal in the last play of the game allowing the Redskins to win 24-22.  
San Francisco 49ers
Akers performed well enough to keep the starting job however, as Cundiff was left off the postseason roster and released 17 days later on January 18, 2013. 
New York Jets
Second stint with Browns
Cundiff was signed by the Cleveland Browns on September 3, 2013 after the Browns made roster cuts and got rid of all their kickers, including Shayne Graham. On March 6, 2014, Cundiff was re-signed for the next year for just over $1 million. He made 80 percent of his field goals and 100 percent of his extra points last year. On September 14, 2014, Cundiff kicked a game-winning field goal against the New Orleans Saints with three seconds remaining. He did the same on November 23 against the Atlanta Falcons.  After sustaining a knee injury on December 11, 2014, Cundiff was subsequently released on December 13, 2014, with an injury settlement.  In the five games prior to his release, Cundiff missed at least one field goal in each game. 
Cundiff is married to his college sweetheart, Nicole. They have three children.
In July 2007, Cundiff enrolled in a full-time Master of Business Administration (MBA) program at Arizona State University's W. P. Carey School of Business, alongside teammate Katrina Nevels. He graduated with his MBA from ASU in May, 2009.