The invention relates to a gas distributor for letting in at least one gas and distributing said gas into a processing chamber, and to a method for producing said gas distributor. The gas distributor has a bottom plate, a temperature control plate, and a cover plate, which are connected to each other in a gas-tight manner by means of a joining method. The temperature control plate has temperature control channels, which are designed as perforations separated from each other by webs and which extend from a first side of the temperature control plate to a second side of the temperature control plate. Web through-holes are formed in the webs of the temperature control plate, which web through-holes correspond with gas outlet openings in the bottom plate and gas inlet openings in the cover plate. A temperature control fluid distributor and a temperature control fluid collector are formed in the cover plate as perforations through the cover plate. A temperature control fluid can therefore flow from a temperature fluid supply connection arranged on the cover plate into the temperature control channels via the temperature control fluid distributor and into a temperature fluid outlet connection arranged on the cover plate via the temperature control fluid collector. According to the method, first the temperature control channels are formed in the temperature control plate, the temperature control fluid distributor and the temperature control fluid collector are formed in the cover plate, and the bottom plate, the temperature control plate, and the cover plate are connected to each other gas-tight. Then, the gas channels are produced in a common step.