Tan-y-Bwlch

Tan-y-Bwlch means under the pass in Welsh and may refer to the following places in Wales:
 * Tan-y-Bwlch, Aberystwyth, a nature reserve
 * Tan-y-Bwlch, Maentwrog, a village
 * Tan-y-Bwlch railway station
 * Plas Tan y Bwlch, the Snowdonia National Park environmental studies centre