The women's 48 kilograms weightlifting event at the 2012 Summer Olympics in London, United Kingdom, took place at ExCeL London on 28 July.

[1] Total score was the sum of the lifter's best result in each of the snatch and the clean and jerk, with three lifts allowed for each lift.

In case of a tie, the lighter lifter won; if still tied, the lifter who took the fewest attempts to achieve the total score won.

Lifters without a valid snatch score did not perform the clean and jerk.

[2] All times are British Summer Time (UTC+01:00) Prior to this competition, the existing world and Olympic records were as follows.