Christian Vater (11 October 1679 – 25 January 1756) was a German organ and harpsichord builder.
He was born in Hanover; his father Martin Vater was an organ builder and gave him his first instruction in the craft.
Only one harpsichord of his has survived, dated 1738, it has a single manual, two 8' choirs and a buff stop, is of short scale and strung in brass.
The instrument is well preserved (Germanisches Nationalmuseum, Nüremberg, Germany) and of good quality, making it a popular model for copying.
Parisian harpsichord maker Antoine Vater was his brother, and taught Henri Hemsch.