Caesium carbonate
Systematic name	Caesium carbonate
Other names	Cesium carbonate
Molecular formula	Cs2CO3
Molar mass	325.82
CAS number	[534-17-8]
Density	4.072 g/cm3
Solubility (water)	260.5 g/100 mL at 15 °C
Melting point	decomp. at 610 °C
Chemical infobox

Caesium carbonate (or cesium carbonate in the US) is a white crystalline solid of formula Cs₂CO₃. It is more soluble in organic solvents than most carbonates such as potassium carbonate, therefore it finds use as a base in organic chemistry.