thumb|right|alt=Concentrated aqueous solution of gold(III) chloride (auric chloride)|Concentrated aqueous solution of gold(III) chloride (auric chloride)
Gold halides are compounds of gold with the halogens.
Monohalides
AuCl, AuBr, and AuI are all crystalline solids with a structure containing alternating linear chains: ..-X-Au-X-Au-X-Au-X-... The X-Au-X angle is less than 180°.
The monomeric AuF molecule has been detected in the gas phase.
Trihalides
Gold triiodide does not exist or is unstable.
Gold(III) fluoride, AuF<sub>3</sub>, has a unique polymeric helical structure, containing corner-sharing {AuF<sub>4</sub>} squares.
Pentahalides
Gold(V) fluoride, AuF<sub>5</sub>, is the only known example of gold in the +5 oxidation state. It most commonly occurs as the dimer Au<sub>2</sub>F<sub>10</sub>.