Éclair may refer to :
- Éclair (pastry), a long cream-filled French pastry
- Laboratoires Éclair, a camera manufacturing French company
- Éclair (Kiddy Grade), an anime character
- A princess in the game La Pucelle Tactics
- Éclair "Lightning" Farron, the main character of the video game Final Fantasy XIII
- The 2.0 and 2.1 versions of the Android mobile operating system