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Automatic Speech Recognition (ASR) technique has been greatly developed in recent years, which expedites many applications in other fields. For the ASR research, speech corpus is always an essential foundation, especially for the vertical industry, such as Air Traffic Control (ATC). There are some speech corpora for common applications, public or paid. However, for the ATC domain, it is difficult to collect raw speeches from real systems due to safety issues. More importantly, annotating the transcription is a more laborious work for the supervised learning ASR task, which hugely restricts the prospect of ASR application. In this paper, a multilingual speech corpus (ATCSpeech) from real ATC systems, including accented Mandarin Chinese and English speeches, is built and released to encourage the non-commercial ASR research in the ATC domain. The corpus is detailly introduced from the perspective of data amount, speaker gender and role, speech quality and other attributions. In addition, the performance of baseline ASR models is also reported. A community edition for our speech database can be applied and used under a special contract. To our best knowledge, this is the first work that aims at building a real and multilingual ASR corpus for the ATC related research.