The 56-year-old, who guided his home country to the World Cup in 2014, has penned a two-year extension that will see him continue until after Euro 2020.
Germany were beaten by France in the semi-finals of Euro 2016, but have begun the qualifying campaign for the 2018 World Cup in Russia well.
They top Group C with three wins from three, with an away match in San Marino next up on November 11.
In Low’s five major tournaments at the helm, Germany have always made it at least to the semi-finals, while they were beaten finalists at Euro 2008.
“I have always stressed that I could not imagine a better coach for our national team than Jogi Low,” said DFB president Reinhard Grindel.
“He has defined this team over the years with his passion and his expert ability, bringing them on and leading them to the World Cup title.
“He emits great decisiveness and the motivation to defend the World Cup title in Russia.
“Both sides wanted security for planning the future and to be able to concentrate on the sporting challenges we face without any disturbances from speculation.
“We are pleased that we are able to continue this extremely faithful and successful collaboration beyond the World Cup and Jogi Low would also like to be in charge when we want to start our home group games at Euro 2020 in Munich.”