Lliwedd Bach is a top of Y Lliwedd in the Snowdonia National Park, North Wales.

It is the last "top" on the main ridge of Y Lliwedd, the other being Y Lliwedd East Peak.

A broad ridge at around 580m carries on northwards until the subsidiary summit of Gallt y Wenallt is reached.

The summit is unmarked and offers good views of Y Lliwedd's cliffs, Snowdon (Yr Wyddfa) and Crib Goch.

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