| Radomir | |
| Elevation M: | 2031 |
| Elevation Ref: | [1] |
| Prominence M: | 1595 |
| Map: | Bulgaria |
| Label Position: | right |
| Listing: | Ultra |
| Location: | Blagoevgrad Province, Bulgaria and Serres regional unit, Central Macedonia, Greece |
| Range: | Belasica |
| Coordinates: | 41.3217°N 23.1219°W |
Radomir (bg|Радомир) or Sidiropetra (el|Σιδηρόπετρα),[2] is a mountain on the Bulgarian–Greek border. At 2031m (6,663feet)[3] or 2029m (6,657feet) [4] it is the highest peak in the Belasica range. It is also known by its earlier Greek name Kalabaka .
In Bulgarian, the peak was named after the Bulgarian Emperor Gavril Radomir who took part in the battle of Kleidion in the Belasitsa mountains.
Radomir is located 7km (04miles) north of Neochori, the nearest town on the Greek side, and 9km (06miles) south-west of Petrich, the nearest town on the Bulgarian side.