World title lineage
IBO LIGHT WELTERWEIGHT Champions
A complete roll of IBO light welterweight champions since 1994 — 13 champions across 15 reigns. MARK CHAMBERLAIN is the current titleholder. The longest reign belongs to PABLO DANIEL SARMIENTO (10y 6m, 0 defences).
- 15MARK CHAMBERLAINCURRENT CHAMPION
2026–present · 3m · 0 defences
- 14
2026 · 5m · 0 defences
- 13
2025–2026 · 1y 1m · 0 defences
- 12
2021–2025 · 3y 11m · 0 defences
- 11
2017–2021 · 3y 11m · 0 defences
- 10
2014–2017 · 3y · 0 defences
- 9
2012–2014 · 1y 4m · 1 defence
- 8
2012 · 21d · 0 defences
- 7
2012 · 5m · 0 defences
- 6
2012 · 5m · 0 defences
- 5
2001–2012 · 10y 6m · 0 defences
- 4
2001 · 3m · 0 defences
- 3
1995–2001 · 6y 2m · 0 defences
- 2
1994–1995 · 3m · 0 defences
- 1
1994 · 6m · 1 defence
