The Pig Memorial is a monument in Bangkok, located along the Old City Moat on Rattanakosin Island, adjacent to the Pihkun Bridge (fig.). It was constructed in 1913 AD to mark the fiftieth birthday anniversary of Queen Saowapha.

The monument is in cast-iron and was initially erected standing atop a base made from big stone slabs pilling on top of each other.

Today, the stone base has been replaced by a higher hill-like base made of cement, and some still visit the memorial in order to make merit, especially those who are born in the Year of the Pig according to the Chinese zodiac.