The 24-year-old striker has seen his three-game suspension reduced to two matches by the DFB, which means the Poland international is likely to feature against Hannover on Saturday
The 24-year-old was sent off in last month's shock 4-1 home defeat to Hamburg, but he will now be available for Saturday's home game with Hannover. He missed the recent games against Borussia Monchengladbach and Eintracht Frankfurt.
After a three-hour long hearing, Goetz Elles, chairman of the Federal Court, revealed the reasoning behind Lewandowski's ban being cut.
"It was not a kick [out]. A suspension for two games seems reasonable to me," he told gathered media.
Dortmund CEO Hans-Joachim Watzke was relieved about the decision to reduce his star striker's ban.
"This was a fair trial, we are very grateful. We are pleased that Robert can play on Saturday," he said.
Poland's current Footballer of the Year was shown a straight red card for a rash challenge on Hamburg midfielder Per Skjelbred on February 9.
Lewandowski is currently second in the Bundesliga scoring charts with 14 goals, and has been strongly linked with a move to Bayern Munich this summer, though Manchester United are also reportedly interested.