The LaTeX command for maltese (✠) is \maltese.
\malteseWriting a paper? The table generator and the BibTeX cleaner are one click away, no account.
Write \maltese inside math mode, that is between $…$ for inline math or in a \[ … \] or equation block for display math. This symbol needs the amssymb package, so add \usepackage{amssymb} to your preamble.
\maltese works both in running text and inside a formula. With unicode-math under XeLaTeX or LuaLaTeX, typing ✠ in a formula gives the same symbol.
Open this example in the live preview: it renders as you type, with no compiler and no signup.
\dagger\ddagger^\circ\sharp\flat\natural\checkmark\clubsuit\diamondsuit\heartsuit\spadesuit\hbar\ell\wpMore math symbols in LaTeX: the full table or search all 350+ LaTeX symbols.
Use \maltese in math mode after adding \usepackage{amssymb} to your preamble. For example, $\maltese$.
It comes from the amssymb package: add \usepackage{amssymb} to your preamble.