Here are the most basic of piano chords that you would want to know. Really there are only six basic chord varieties, which are transposed to all twelve keys. If you would like to learn these chords without memorizing this chart, it would be good for you to learn the logic behind these chords. In my book "How to Speed Read Piano Chord Symbols" I explain tricks for learning this logic quickly.

I have a longer list of chords, which includes variations and extensions of the chords above.
See the advanced piano chords list.