| Clubname: | Omiya Ardija 大宮アルディージャ |
| Nickname: | Risu (The Squirrels) |
| Upright: | 0.6 |
| Fullname: | Omiya Ardija |
| Stadium: | NACK5 Stadium Ōmiya Omiya-ku, Saitama, Saitama |
| Capacity: | 15,500 |
| Owner: | NTT Group |
| Chairman: | Masashi Mori |
| Manager: | Tetsu Nagasawa |
| Current: | 2024 Omiya Ardija season |
| Website: | http://www.ardija.co.jp/ |
| Pattern La1: | _Omiya Ardija 2024 HOME FP |
| Pattern B1: | _Omiya Ardija 2024 HOME FP |
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| Pattern Sh1: | _Omiya Ardija 2023 HOME FP |
| Pattern So1: | _Omiya Ardija 2022 HOME FP |
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| Pattern La2: | _Omiya Ardija 2024 HOME FP |
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is a Japanese professional association football club based in Ōmiya, Saitama Prefecture. Its "hometown" as designated by the league is the whole of Saitama city, which is shared with neighbours Urawa Red Diamonds. The team currently competes in the J3 League from 2024, the Japanese third tier of professional football. After relegation from 2023 in second tier.
Their home field is : Ōmiya Football Stadium by the naming rights with occasional games being played at the Kumagaya Athletic Stadium.
Omiya Ardija's crest features a squirrel on the right, which is the animal of Omiya. On the left, there are 5 lines, which reference the historic roads that run through Omiya, including the famous Nakasendō, which runs to the Hikawa Shrine, right near Nack5 Stadium.
The team were founded in 1968 as NTT Saitama Soccer Selection in Urawa, Saitama and later known as the NTT Kantō Soccer Club in 1969. They were first promoted to the Japan Soccer League (JSL) Division 2 in 1987/88, and when the JSL folded, joined the former Japan Football League.[1]
In 1998 it was separately incorporated as NTT Sport Community K.K. based in Ōmiya to participate in the J. League. The name "Ardija" is a transcription of the Spanish language ardilla (squirrel) which is the mascot of Ōmiya and the park in which their home stadium is located.[2]
Their matches against Urawa Red Diamonds have been called the "Saitama derby".[3]
In 2005–2007 most of Omiya's home matches were held at Saitama Stadium 2002 and Urawa Komaba Stadium due to expansion works at their home ground. In October 2007 the expansion was complete. On November 11, the re-opening match was held as a J. League season match between the Ardija and Ōita Trinita (1–2).[4]
Omiya competed in the J1 League following an immediate promotion in 2015 after being relegated in 2014. Omiya was relegated again following the 2017 season. They competed in J1 2005 and continued to remain until 2014, following promotion from J2 in 2004 as the second placed team.
In 2023, Omiya were relegated to J3 League after six seasons stint in second division due to worst performance and will play third division football for the first time since 1993.
In August 2024, Omiya Ardija announced Red Bull as their new owner, after acquiring 100% of the club shares, formerly owned by NTT, becoming part of their multi-club ownership.[5]
Omiya Ardija has two squirrels as its mascots, named Ardi and Miya. Both wear the team kits. According to the club website, Miya is one size smaller than Ardi, being then, slightly shorter than him.[6]
| bgcolor=gold | Champions | bgcolor=silver | Runners-up | Third place | bgcolor=palegreen | Promoted | bgcolor=pink | Relegated |
| League | Emperor's Cup | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Season | Div. | Teams | Pos. | P | W (OTW) | D | L (OTL) | F | A | GD | Pts | Attendance/G | |||
| 1999 | 10 | 6th | 36 | 14 (4) | 1 | 15 (2) | 47 | 44 | 3 | 51 | 2,674 | 1st round | 3rd round | ||
| 2000 | 11 | 4th | 40 | 21 (2) | 1 | 14 (2) | 55 | 49 | 6 | 68 | 3,477 | 1st round | 3rd round | ||
| 2001 | 12 | 5th | 44 | 20 (6) | 6 | 11(1) | 73 | 43 | 30 | 78 | 3,864 | 1st round | 1st round | ||
| 2002 | 12 | 6th | 44 | 14 | 17 | 13 | 52 | 42 | 10 | 59 | 5,266 | Not eligible | 4th round | ||
| 2003 | 12 | 6th | 44 | 18 | 7 | 19 | 52 | 61 | 9 | 61 | 5,058 | 3rd round | |||
| 2004 | 12 | 2nd | 44 | 26 | 9 | 9 | 63 | 38 | 25 | 87 | 6,108 | 5th round | |||
| 2005 | 18 | 13th | 34 | 12 | 5 | 17 | 39 | 50 | 11 | 41 | 9,980 | Quarter final | Semi final | ||
| 2006 | 18 | 12th | 34 | 13 | 5 | 16 | 43 | 55 | 12 | 44 | 10,234 | Group stage | 5th round | ||
| 2007 | 18 | 15th | 34 | 8 | 11 | 15 | 24 | 40 | 16 | 35 | 11,465 | Group stage | 4th round | ||
| 2008 | 18 | 12th | 34 | 12 | 7 | 15 | 36 | 45 | 9 | 43 | 9,350 | Group stage | 5th round | ||
| 2009 | 18 | 13th | 34 | 9 | 12 | 13 | 40 | 47 | 7 | 39 | 13,707 | Group stage | 3rd round | ||
| 2010 | 18 | 12th | 34 | 11 | 9 | 14 | 39 | 45 | 6 | 42 | 11,064 | Group stage | 4th round | ||
| 2011 | 18 | 13th | 34 | 10 | 12 | 12 | 38 | 48 | 10 | 42 | 12,221 | 2nd round | 2nd round | ||
| 2012 | 18 | 13th | 34 | 11 | 11 | 12 | 38 | 45 | 7 | 44 | 10,637 | Group stage | 4th round | ||
| 2013 | 18 | 14th | 34 | 14 | 3 | 17 | 45 | 48 | 3 | 45 | 11,138 | Group stage | 2nd round | ||
| 2014 | 18 | 16th | 34 | 9 | 8 | 17 | 44 | 60 | 16 | 35 | 10,811 | Group stage | Quarter final | ||
| 2015 | J2 | 22 | 1st | 42 | 26 | 8 | 8 | 72 | 37 | 35 | 86 | 9,490 | Not eligible | 3rd round | |
| 2016 | J1 | 18 | 5th | 34 | 15 | 11 | 8 | 41 | 36 | 5 | 56 | 11,814 | Quarter final | Semi final | |
| 2017 | 18 | 18th | 34 | 5 | 10 | 19 | 28 | 60 | 32 | 25 | 11,464 | Group stage | Quarter final | ||
| 2018 | J2 | 22 | 5th | 42 | 21 | 8 | 13 | 65 | 48 | 17 | 71 | 9,224 | Not eligible | 3rd round | |
| 2019 | 22 | 3rd | 42 | 20 | 15 | 7 | 62 | 40 | 22 | 75 | 9,478 | 3rd round | |||
| 2020 † | 22 | 15th | 42 | 14 | 11 | 17 | 43 | 52 | 9 | 53 | 2,515 | Did not qualify | |||
| 2021 † | 22 | 16th | 42 | 9 | 15 | 18 | 51 | 56 | 5 | 42 | 4,311 | 2nd round | |||
| 2022 | 22 | 19th | 42 | 10 | 13 | 19 | 48 | 64 | -16 | 43 | 5,272 | 3rd round | |||
| 2023 | 22 | bgcolor=pink | 21st | 42 | 11 | 6 | 25 | 37 | 71 | -49 | 39 | 6,862 | 3rd round | ||
| 2024 | 20 | TBD | 38 | 2nd round | |||||||||||
| No. | scope=col | Years | ||
|---|---|---|---|---|
| In chronological order--> | scope=row | Shakaijin Cup | 1 | 1981 |
| scope=row | Regional League promotion series | 1 | 1986 | |
| scope=row | J2 League | 1 | 2015 |
The main U-18 team of Omiya Ardija currently plays in the Prince Takamado U-18 Premier League, the top-flight league for U-18 clubs in the country.[8]
| Position | Staff |
|---|---|
| Manager |  Tetsu Nagasawa |
| Assistant coach | Tetsuhiro Kina |
| First-team coach | Naomichi Wakamiya Yusuke Shimada |
| Goalkeeping coach | Norio Takahashi |
| Physical coach | Takuma Okumura |
| Technical staff | Yuki Fukuro |
| Chief manager | Yosuke Hakamada |
| Side manager | Yuichi Goto |
| Interpreter | Leonardo Uehara Minori Sato |
| Chief athletic trainer | Takafumi Kazama |
| Athletic trainer | Kenichi Sekido Natsuya Yashiro |
| Physiotherapist | Ryohei Ikuta |
| Manager | Nationality | Tenure < | --!colspan="5" | Managerial Record--> | ||
|---|---|---|---|---|---|---|
| Start | Finish | P | W | D | L | W %--> |
| 1 January 1999 | 31 December 1999 | --> | ||||
| 1 February 2000 | 31 January 2002 | --> | ||||
| 22 December 2001 | 22 December 2002 | --> | ||||
| 1 February 2003 | 13 October 2003 | --> | ||||
| 10 October 2003 | 31 December 2003 | --> | ||||
| 1 February 2004 | 31 January 2007 | --> | ||||
| 1 January 2007 | 30 June 2007 | --> | ||||
| 1 July 2007 | 31. December 2007 | --> | ||||
| 1 February 2008 | 31 January 2009 | --> | ||||
| 1. February 2009 | 26 April 2010 | --> | ||||
| 24 April 2010 | 19 May 2012 | --> | ||||
| Takeyuki Okamoto (interim) | 31 Mai 2012 | 10 June 2012 | --> | |||
| 10 June 2012 | 11 August 2013 | --> | ||||
| Takeyuki Okamoto (interim) | 11 August 2013 | 20 August 2013 | --> | |||
| 20 August 2013 | 31 December 2013 | --> | ||||
| 1 February 2014 | 31 August 2014 | --> | ||||
| 31 August 2014 | 28 May 2017 | --> | ||||
| 29 Mai 2017 | 5 November 2017 | --> | ||||
| 6 November 2017 | 31 January 2019 | --> | ||||
| 1 February 2019 | 31 January 2021 | --> | ||||
| 1 February 2021 | 25 May 2021 | --> | ||||
| 26 May 2021 | 9 June 2021 | --> | ||||
| 10 June 2021 | 26 May 2022 | |||||
| Naoki Soma[9] | 28 May 2022 | 19 May 2023 | --> | |||
| Masato Harasaki[10] | 19 May 2023 | present | --> | |||