The 740s decade ran from January 1, 740, to December 31, 749.
Significant people
- Hisham
- Al-Walid II
- Yazid III
- Ibrahim ibn al-Walid
- Marwan II
- Sulayman ibn Hisham
- Yazid al-Afqam
- Maslama ibn Hisham
- Sa'id ibn Hisham
- Pope Zachary
- Leo III the Isaurian
- Constantine V