2017 Kansas City Chiefs

The 2017 Kansas City Chiefs season was the franchise's 48th season in the National Football League, the 55th as the Kansas City Chiefs, the 58th overall, the fifth under head coach Andy Reid, and first under general manager Brett Veach.

Season notes
General manager John Dorsey was fired on June 22, 2017. On July 10, the Chiefs promoted co-director of player personnel Brett Veach to general manager. The only other personnel change for the Chiefs that occurred was co-offensive coordinator Brad Childress was promoted to assistant head coach, leaving Matt Nagy as the only offensive coordinator. The Chiefs most notable transaction of the off-season came when they released all-time leading rusher Jamaal Charles after 9 seasons. After being released, Charles signed with the Chiefs division rival, the Denver Broncos.

Following the Atlanta Falcons 17–23 loss to the Buffalo Bills in Week 4, the Chiefs became the last undefeated team left in the NFL for the 4th time in team history, and the 2nd time under Andy Reid, with the previous times being in 2003, 2010, and 2013. After their 5–0 start, the Chiefs lost 6 of their next 7 games, the lone win coming against the Broncos. During this stretch, the Chiefs offense struggled, leading to head coach Andy Reid giving play calling duties during games to offensive coordinator Matt Nagy.

After four straight losses, the Chiefs won three straight games to win the AFC West for the second consecutive season. It was the first time in franchise history that the Chiefs have won back to back division titles. It also marked the Chiefs qualifying for the playoffs three consecutive seasons, which they have not done since they made six consecutive playoff appearances from 1990 to 1995. They finished the season with a 10–6 record, earning the AFC's fourth seed in the playoffs. They lost to the Tennessee Titans 21-22 in the Wild Card Round, after having a 21-3 lead at halftime. The loss extended their NFL record six straight home playoff losses. It was the second time under Andy Reid they lost a playoff game after being up by more than 10 points at halftime. The Chiefs have lost 3 consecutive playoff games, and have lost 11 of their last 12.

NFL Top 100
The Chiefs had 6 players ranked in NFL Network's annual Top 100 players list, which was tied for the 3rd most.

Free agents

 * Nick Foles had an option on his contract for the 2017 season that the Chiefs declined

Draft
Notes
 * The Chiefs forfeited their original 6th round selection (what would have been the 211th overall selection) as part of their punishment for a violation of the NFL's Anti-Tampering policy during the free agency period.
 * The Chiefs traded their 1st round selection, (27th overall), their 3rd round selection (91st overall), and their 2018 1st round selection for the Buffalo Bills 1st round selection (10th overall)
 * The Chiefs traded their 3rd round selection (104th overall), 4th round selection (132nd overall), and 7th round selection (245th overall) to the Minnesota Vikings for their 3rd round selection (83rd overall)
 * The Chiefs traded tight end James O'Shaughnessy and their 6th round selection (216th overall) to the New England Patriots for the Patriots 5th round selection (183rd overall)
 * The Chiefs traded two 5th round selections (170th overall and 180th overall) to the Minnesota Vikings for their 4th round selection (139th overall)

Players cut in the offseason before playing for the Chiefs

 * Indicates player was on the practice squad during the 2016 season but never on the active roster

Regular season
Note: Intra-division opponents are in bold text.

Week 1: at New England Patriots
NFL Kickoff Game

Week 5: at Houston Texans
With the win, the Chiefs improved to 5-0. The team would start with such a record for the first time since 2013.