| Borislav Jeliazkov | |
| Birth Date: | January 8, 1971 |
| Birth Place: | Bulgaria |
| Nationality: | Bulgarian |
| Weight: | 213lb |
| Weight Class: | Heavyweight |
| Team: | Rings Bulgaria |
| Years Active: | 1997 - 2001 |
| Mma Kowin: | 1 |
| Mma Subwin: | 4 |
| Mma Koloss: | 1 |
| Mma Subloss: | 4 |
| Mma Decloss: | 1 |
| Sherdog: | 1450 |
Borislav Jeliazkov (bg|Борислав Желязков) is a Bulgarian mixed martial artist. He competed in the Heavyweight division.
|-| Loss| align=center| 5–6| Mikhail Ilyukhin| Submission (armbar)| Rings: World Title Series 2| | align=center| 2| align=center| 2:06| Kanagawa, Japan| |-| Win| align=center| 5–5| Konstantin Uriadov| Submission (rear-naked choke)| Rings Russia: Russia vs. Bulgaria| | align=center| 1| align=center| 3:09| Yekaterinburg, Russia| |-| Loss| align=center| 4–5| Ryushi Yanagisawa| Submission (toe hold)| Rings: King of Kings 2000 Block A| | align=center| 1| align=center| 3:45| Tokyo, Japan| |-| Win| align=center| 4–4| David Safarov| Submission (choke)| Rings Russia: Russia vs. Bulgaria| | align=center| 1| align=center| 0:00| Tula, Russia| |-| Win| align=center| 3–4| Igor Perminov| KO (knee to the body)| Rings Russia: Russia vs. The World| | align=center| 1| align=center| 1:15| Yekaterinburg, Sverdlovsk Oblast, Russia| |-| Loss| align=center| 2–4| Bobby Hoffman| KO (punch)| Rings: Millennium Combine 1| | align=center| 1| align=center| 8:00| Tokyo, Japan| |-| Loss| align=center| 2–3| Kiyoshi Tamura| Submission (rear-naked choke)| Rings: King of Kings 1999 Block B| | align=center| 2| align=center| 1:17| Osaka, Japan| |-| Win| align=center| 2–2| Tim Lajcik| Submission (rear-naked choke)| Rings: King of Kings 1999 Block B| | align=center| 1| align=center| 2:23| Osaka, Japan| |-| Loss| align=center| 1–2| Wataru Sakata| Submission (armbar)| Rings: Rise 4th| | align=center| 1| align=center| 6:49| Japan| |-| Win| align=center| 1–1| Wataru Sakata| Submission (scarf hold)| Rings: Rise 1st| | align=center| 1| align=center| 8:28| Japan| |-| Loss| align=center| 0–1| Tsuyoshi Kosaka| Decision (lost points)| Rings: Mega Battle Tournament 1997 Semifinal 1| | align=center| 1| align=center| 0:00| Japan|