| Denis Arlashin | |
| Fullname: | Denis Alekseyevich Arlashin |
| Birth Date: | 21 February 1990 |
| Birth Place: | Vyazma, Smolensk Oblast, Russian SFSR |
| Height: | 1.74 m |
| Position: | Forward/Midfielder |
| Years1: | 2006 |
| Clubs1: | FC Teplokontrol-Status Safonovo |
| Years2: | 2007–2008 |
| Clubs2: | SC Smolensk |
| Years3: | 2008 |
| Clubs3: | FC Dnepr Smolensk (amateur) |
| Years4: | 2009 |
| Clubs4: | FC Dnepr Smolensk |
| Caps4: | 23 |
| Goals4: | 1 |
| Years5: | 2010 |
| Caps5: | 12 |
| Goals5: | 1 |
| Years6: | 2010 |
| Clubs6: | FC Volga Tver |
| Caps6: | 8 |
| Goals6: | 0 |
| Years7: | 2011 |
| Clubs7: | FC Dnepr Smolensk |
| Caps7: | 34 |
| Goals7: | 5 |
| Years8: | 2012–2013 |
| Clubs8: | FC Rotor Volgograd |
| Caps8: | 31 |
| Goals8: | 2 |
| Years9: | 2013–2014 |
| Clubs9: | FC Zenit Penza |
| Caps9: | 19 |
| Goals9: | 1 |
| Years10: | 2014–2015 |
| Clubs10: | FC Neftekhimik Nizhnekamsk |
| Caps10: | 24 |
| Goals10: | 7 |
| Years11: | 2015–2016 |
| Clubs11: | FC KAMAZ Naberezhnye Chelny |
| Caps11: | 14 |
| Goals11: | 0 |
| Years12: | 2016–2017 |
| Clubs12: | FC SKA Rostov-on-Don |
| Caps12: | 39 |
| Goals12: | 2 |
| Years13: | 2018 |
| Clubs13: | FC Iskra Smolensk (amateur) |
Denis Alekseyevich Arlashin (Russian: Денис Алексеевич Арлашин; born 21 February 1990) is a Russian former professional football player.
He made his Russian Football National League debut for FC Rotor Volgograd on 9 July 2012 in a game against FC Tom Tomsk. He also played in the FNL for KAMAZ in the 2015–16 season.
He is a twin brother of Andrei Arlashin.