CONQUEST is a linear scaling, or O(N), density functional theory (DFT) electronic structure code. The code is designed to perform DFT calculations on very large systems containing many thousands of atoms. It can be run at different levels of precision ranging from ab initio tight binding up to full DFT with plane wave accuracy. It has been applied to the study of three-dimensional reconstructions formed by Ge on Si(001), containing over 20,000 atoms. Tests on the UK's national supercomputer HECToR in 2009 demonstrated the capability of the code to perform ground-state calculations on systems of over 1,000,000 atoms.

ConQuesT is the annual science fiction convention held in the Kansas City, Missouri area over the U. S. Memorial Day weekend that is sponsored by the long-running (since 1971) Kansas City Science Fiction and Fantasy Society (KaCSFFS, pronounced kax-fuss). ConQuesT is the oldest such fan convention of its type in Missouri and in the U. S. central states region, first established using the name Mid-America Con in June 1972. After that, the next nine KaCSFFS-sponsored conventions were named BYOB-Cons (the final "B" in the name having additional and alternate science fictional meanings beyond the traditional "beer".) In 1980 KaCSFFS adopted the permanent name ConQuesT (sometimes abbreviated CQT) for the convention.

Conquest may refer to:

• Conquest (military), the act of military subjugation of an enemy by force of arms