Alhaji Jeng (born 13 December 1981) is a Swedish pole vaulter.

He currently has the Gambian national record at 5.30 metres, set before his Swedish citizenship.

He previously held the Swedish national indoor record at 5.81 metres.

His outdoor personal best is 5.80 metres, achieved in June 2006 in Zhukovskiy.

This places him fourth on the Swedish all-time list, behind Armand Duplantis and Oscar Janson and Patrik Kristiansson and equal to Martin Eriksson.