# Rho (disambiguation)

Rho (Ρ or ρ) is a letter of the Greek alphabet.

Rho also may refer to:

## Roles of the Greek letter Ρ or ρ as a symbol

in mathematics
in physics
• Density of a material
• Volume charge density
• Resistivity of a material
• Rho meson, any of $\rho^+$, $\rho^0$ & $\rho^-$
in biology
in statistics
in other fields