Psi in LaTeX

The LaTeX command for Psi (Ψ) is \Psi.

\Psi

Greek Uppercase · Unicode Ψ (U+03A8) · no package needed

How to type Psi

Write \Psi inside math mode — that is, between $…$ for inline math or in a \[ … \] / equation block for display math. It is part of core LaTeX math, so no extra package is required.

Example

$\Psi(x) = \Psi_0$

\Psi(x) = \Psi_0

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Related Greek Uppercase symbols

\Gamma\Delta\Theta\Lambda\Xi\Pi\Sigma\Upsilon\Phi\Omega

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FAQ

How do you write Psi (Ψ) in LaTeX?

Use \Psi in math mode — it needs no extra package. For example, $\Psi(x) = \Psi_0$.

Which package provides \Psi?

None — \Psi is built into LaTeX's math mode, so no extra package is required.

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