| Guy I of Clermont-Nesle Guy Ier de Clermont-Nesle | |
|---|---|
| Seigneur of Ailly and Maulette | |
| Reign | 1285–1302 |
| Seigneur of Offemont jure uxoris | |
| Reign | c. 1294–1302 |
| Seigneur of Breteuil ? | |
| Reign | 1285–1302 |
| Born | c. 1255 |
| Died | 1302 Kortrijk |
| Spouse | Marguerite of Mello Marguerite of Thourotte possibly more |
| Issue | Jean I of Nesle-Offémont Alix Mahaut Péronne Raoul IV of Clermont-Nesle ? |
| House | House of Clermont-en-Beauvaisis also House of Creil also House of Clermont-Nesle |
| Father | Simon II of Clermont |
| Mother | Adele of Montfort |
Guy I of Clermont-Nesle (c. 1255 – 11 July 1302) was a Marshal of France, Seigneur (Lord) of Offemont jure uxoris, and possibly of Ailly, Maulette and Breteuil. He might have been a Seigneur of Nesle also, or used the title "Sire of Nesle" due to his family. Difficulties about the seigneurie of Breteuil are present, and the status of Ailly and Maulette in relation to Breteuil.