"Weight of the World" is the second and final single taken from British R&B singer Lemar's fourth studio album, The Reason.

"Weight of the World" is co-produced by Jim Jonsin and Louis Biancaniello, while Lemar and Sam Watters co-wrote the lyrics.

The song peaked at 31 in the UK and debuting at 10 in the R&B Chart.

Lemar performed the song on UK breakfast television show GMTV.

The song debuted at #108 in the UK before rising into the top 100 the following week at #46.