Theatr
Y gelfyddyd o actio a pherfformio straeon o flaen cynulleidfa yw theatr, trwy ddefnyddio technegau megis lleferydd, ystumiau, cerddoriaeth, dawns, meim, ac ati. Gall y gair "theatr" hefyd gyfeirio at adeilad sy'n cynnal perfformiadau.
![](https://cdn.statically.io/img/upload.wikimedia.org/wikipedia/commons/thumb/3/38/Panor%C3%A1mica_interior_del_Teatro_Col%C3%B3n_%28cropped%29.jpg/220px-Panor%C3%A1mica_interior_del_Teatro_Col%C3%B3n_%28cropped%29.jpg)
![](https://cdn.statically.io/img/upload.wikimedia.org/wikipedia/commons/thumb/7/7f/Mosaic_depicting_theatrical_masks_of_Tragedy_and_Comedy_%28Thermae_Decianae%29.jpg/220px-Mosaic_depicting_theatrical_masks_of_Tragedy_and_Comedy_%28Thermae_Decianae%29.jpg)
Darllen pellach
golygu- Brook, Peter. The Empty Space (Llundain, Penguin, 2008).
- Brown, John Russell. The Oxford Illustrated History of the Theatre (Rhydychen, Gwasg Prifysgol Rhydychen, 2001 [1995]).