Null symbol
# Null symbol

Null symbol may refer to:

* Null character, U+0000, U+2400 "symbol for null" (␀), a single-character glyph "NUL"
* Null sign (∅), the empty set
* Null (SQL) (ω), a special marker and keyword NULL in SQL
* Empty string (λ, Λ, or ε), in formal language theory
