Drilling and completing geothermal wells involves a number of unique challenges. Included in these challenges is the cementing of various casing strings across what are typically weak formations prone to lost circulation. Not only must the cement systems used on these wells be light enough to be circulated in place, they must also withstand the stresses occurring in the cement sheath from cyclic loading. This paper presents a case history in which foamed cement was used in multiple casing strings of a Hawaiian geothermal well.