| Keith Wisniewski | |
| Other Names: | The Polish Connection |
| Birth Date: | 25 October 1981 |
| Birth Place: | Portage, Indiana, United States |
| Nationality: | American |
| Height: | 5feet |
| Weight: | 170lb |
| Weight Class: | Light Heavyweight Middleweight Welterweight Lightweight |
| Fighting Out Of: | Hobart, Indiana, United States |
| Team: | Duneland Vale Tudo |
| Years Active: | 1998-present |
| Mma Kowin: | 6 |
| Mma Subwin: | 15 |
| Mma Decwin: | 7 |
| Mma Koloss: | 4 |
| Mma Subloss: | 3 |
| Mma Decloss: | 8 |
| Mma Draw: | 1 |
| Sherdog: | 2095 |
Keith Wisniewski (born October 25, 1981) is an American professional mixed martial artist currently competing in the Welterweight division. He has competed for the UFC, IFL, M-1 Global, Ironheart Crown, and BodogFIGHT.
Wisniewski made his UFC debut at UFC 56 against Nick Thompson. He lost a unanimous decision.
Following his release from the UFC, Wisniewski lost four straight fights but then went on a six-fight winning streak that included victories over UFC veterans Pete Spratt and Chris Wilson, leading to him being re-signed with the promotion.
Wisniewski faced Josh Neer in his UFC return on October 1, 2011, at .[1] He lost the fight via TKO (doctor stoppage) at the conclusion of the second round.
Wisniewski faced newcomer Chris Clements on April 21, 2012, at UFC 145.[2] He lost the fight via split decision after three back and forth rounds.
Wisniewski was slated to face Marcelo Guimares on September 4, 2013, at UFC Fight Night 28.[3] However, Guimaraes pulled out of the bout citing an injury and was replaced by Ivan Jorge.[4] He lost the fight via unanimous decision and was subsequently released from the promotion.
|-| Loss| align=center| | Ivan Jorge| Decision (unanimous)| | | align=center| 3| align=center| 5:00| Belo Horizonte, Brazil| |-| Loss| align=center| 28–14–1| Chris Clements| Decision (split)| UFC 145| | align=center| 3| align=center| 5:00| Atlanta, Georgia, United States| |-| Loss| align=center| 28–13–1| Josh Neer| TKO (doctor stoppage)| | | align=center| 2| align=center| 5:00| Washington, D.C., United States| |-| Win| align=center| 28–12–1| Chris Wilson| Decision (unanimous) | Hoosier FC 7: Validation | | align=center| 3| align=center| 5:00| Valparaiso, Indiana, United States| |-| Win| align=center| 27–12–1| Randy Crawford| KO (knee)| Cutthroat MMA: Supremacy 2| | align=center| 1| align=center| 0:21| Hammond, Indiana, United States| |-| Win| align=center| 26–12–1| Ted Worthington| Submission (heel hook) | Xtreme Fighting Organization 35| | align=center| 2| align=center| 3:56| Chicago, Illinois, United States| |-| Win| align=center| 25–12–1| Pete Spratt| Submission (rear-naked choke) | Hoosier FC 2: It's On | | align=center| 1| align=center| 4:07| Hammond, Indiana, United States| |-| Win| align=center| 24–12–1| Tristan Yunker| TKO (punches) | War in the Yard| | align=center| 2| align=center| 1:12| Anderson, Indiana, United States| |-| Win| align=center| 23–12–1| Johnny Davis| Submission (rear-naked choke)| C3: Corral Combat Classic 2| | align=center| 1| align=center| 2:00| Hammond, Indiana, United States| |-| Loss| align=center| 22–12–1| Carlo Prater| Decision (split)| Art of War 3| | align=center| 3| align=center| 5:00| Dallas, Texas, United States| |-| Loss| align=center| 22–11–1| Erik Oganov| Decision (split)| Bodog Fight: USA vs. Russia| | align=center| 3| align=center| 5:00| Vancouver, British Columbia, Canada| |-| Loss| align=center| 22–10–1| Rory Markham| TKO (corner stoppage)| IFL: World Championship Semifinals| | align=center| 3| align=center| 4:00| Portland, Oregon, United States| |-| Loss| align=center| 22–9–1| Jorge Masvidal| Decision (majority)| BodogFIGHT: To the Brink of War| | align=center| 3| align=center| 5:00| San José, Costa Rica| |-| Loss| align=center| 22–8–1| Nick Thompson| Decision (unanimous)| UFC 56: Full Force| | align=center| 3| align=center| 5:00| Las Vegas, Nevada, United States| |-| Win| align=center| 22–7–1| Carlo Prater| Decision (unanimous)| FFC 15: Fiesta Las Vegas| | align=center| 3| align=center| 5:00| Las Vegas, Nevada, United States|Return to Welterweight.|-| Win| align=center| 21–7–1| Musail Allaudinov| TKO (punches)| Euphoria: USA vs. Russia| | align=center| 3| align=center| 1:04| Atlantic City, New Jersey, United States|Lightweight debut.|-| Loss| align=center| 20–7–1| Shinya Aoki| Submission (standing armlock)| Shooto: 1/29 in Korakuen Hall| | align=center| 1| align=center| 2:22| Tokyo, Japan| |-| Win| align=center| 20–6–1| Carlo Prater| Decision (split)| Freestyle Fighting Championships 13| | align=center| 3| align=center| 5:00| Biloxi, Mississippi, United States| |-| Win| align=center| 19–6–1| Derrick Noble| Decision (unanimous)| IHC 8: Ethereal| | align=center| 3| align=center| 5:00| Hammond, Indiana, United States| |-| Win| align=center| 18–6–1| Steve Berger| Decision (unanimous)| Combat: Do Fighting Challenge 1| | align=center| 3| align=center| 5:00| Cicero, Illinois, United States| |-| Win| align=center| 17–6–1| Kyle Jensen| Submission (rear-naked choke)| Extreme Challenge 59| | align=center| 1| align=center| 2:19| Medina, Minnesota, United States| |-| Loss| align=center| 16–6–1| Jason Black| Decision| Xtreme Kage Kombat| | align=center| 3| align=center| 5:00| Des Moines, Iowa, United States| |-| Win| align=center| 16–5–1| Chris Moore| Submission (rear-naked choke)| IHC 7: The Crucible| | align=center| 1| align=center| 1:59| Hammond, Indiana, United States| |-| Win| align=center| 15–5–1| Jorge Santiago| KO (punches)| Absolute Fighting Championships 6| | align=center| 3| align=center| 2:14| Fort Lauderdale, Florida, United States| |-| Win| align=center| 14–5–1| Danila Veselov| Submission (guillotine choke)| M-1 MFC - Russia vs. the World 6| | align=center| 1| align=center| 1:54| Moscow, Russia| |-| Win| align=center| 13–5–1| Eddie Sanchez| Submission (choke)| TFC 8: Hell Raiser| | align=center| 1| align=center| N/A| Toledo, Ohio, United States| |-| Win| align=center| 12–5–1| Nuri Shakir| Submission (guillotine choke)| USMMA 3: Ring of Fury| | align=center| 1| align=center| 0:46| Boston, Massachusetts, United States| |-| Win| align=center| 11–5–1| Marco Macera| TKO (punches)| Battle of New Orleans 4| | align=center| 1| align=center| 1:32| Metairie, Louisiana, United States| |-| Win| align=center| 10–5–1| Matt Lee| TKO (punches)| USMMA 2: Ring of Fury| | align=center| 2| align=center| 4:19| Lowell, Massachusetts, United States| |-| Loss| align=center| 9–5–1| John Renken| Submission (kneebar)| HOOKnSHOOT: Relentless| | align=center| 2| align=center| 1:43| Evansville, Indiana, United States|Middleweight bout.|-| Win| align=center| 9–4–1| Eric Pettit| Submission (rear-naked choke)| SC 1: The Awakening| | align=center| 1| align=center| N/A| Canton, Illinois, United States| |-| Win| align=center| 8–4–1| Jason Glabus| Submission (choke)| Chicago Challenge 7| | align=center| 1| align=center| N/A| Chicago, Illinois, United States| |-| Win| align=center| 7–4–1| Dale Carson| Submission (rear-naked choke)| HOOKnSHOOT: Trial 3| | align=center| 1| align=center| N/A| Tell City, Indiana, United States|Light Heavyweight bout.|-| Loss| align=center| 6–4–1| CJ Fernandes| TKO (submission to punches)| TFC 1: Fightzone 1| | align=center| 1| align=center| 31:30| Fort Wayne, Indiana, United States| |-| Win| align=center| 6–3–1| Angelo Popofski| Decision (unanimous)| HOOKnSHOOT: Millennium| | align=center| 1| align=center| 15:00| N/A| |-| Loss| align=center| 5–3–1| Adrian Serrano| Submission (americana)| HOOKnSHOOT: Texas Heat| | align=center| 1| align=center| 6:30| N/A| |-| Win| align=center| 5–2–1| Pat Heidenreich| Submission (armbar)| Night of the Diamonds| | align=center| 1| align=center| N/A| align=center| N/A| |-| Draw| align=center| 4–2–1| Jason Glabus| Draw| Chicago Challenge 6| | align=center| 1| align=center| 10:00| Chicago, Illinois, United States| |-| Loss| align=center| 4–2| Shonie Carter| KO (spinning back fist)| Indiana Martial Arts Challenge 3| | align=center| 1| align=center| 0:40| Indiana, United States| |-| Win| align=center| 4–1| Jim Rhodes| Submission (armbar)| Chicago Challenge 5| | align=center| 1| align=center| N/A| Chicago, Illinois, United States| |-| Win| align=center| 3–1| Josh Cate| Submission (triangle choke)| Fearless Freestyle Fighting 3| | align=center| 1| align=center| 5:08| N/A| |-| Win| align=center| 2–1| Brandon Bledsoe| Submission (rear-naked choke)| Fearless Freestyle Fighting 3| | align=center| 1| align=center| 2:07| N/A| |-| Win| align=center| 1–1| Robert Humphreys| Decision (unanimous)| Fearless Freestyle Fighting 2| | align=center| 1| align=center| 15:00| N/A| |-| Loss| align=center| 0–1| Joey Gilbert| Decision (split)| JKD: Challenge 2| | align=center| 3| align=center| 5:00| Chicago, Illinois, United States|