Null-A Three

Null-A Three
Cover of the first edition
AuthorA. E. van Vogt
Cover artistBruce Pennington
LanguageEnglish
GenreScience fiction
PublisherSphere Books
Publication placeUnited States
Media typePrint
Pages215
ISBN0-7221-8841-2
Preceded byThe Pawns of Null-A 

Null-A Three, usually written Ā Three, is a 1985 science fiction novel by Canadian-American writer A. E. van Vogt. It incorporates concepts from the General semantics of Alfred Korzybski and refers to non-Aristotelian logic.

The novel is a continuation of the adventures of Gilbert Gosseyn from The World of Null-A (1945) and The Pawns of Null-A (1948).