In enzymology, a fluorothreonine transaldolase () is an enzyme that catalyzes the chemical reaction
Thus, the two substrates of this enzyme are <small>L</small>-threonine and fluoroacetaldehyde, whereas its two products are acetaldehyde and 4-fluoro-<small>L</small>-threonine.
This enzyme belongs to the family of transferases, specifically those transferring aldehyde or ketonic groups (transaldolases and transketolases, respectively). The systematic name of this enzyme class is fluoroacetaldehyde:L-threonine aldehydetransferase.