Narrative:

[We were] told to line up and wait on runway 20R. The first officer read back a takeoff clearance which was for an aircraft departing 20C. I thought it was for us as well; so we initiated a takeoff. Upon reaching 80 knots tower stated 'takeoff clearance canceled; abort takeoff immediately.' I brought the aircraft to a stop and exited the runway. We were given instructions to hold short of T2 and contact tower. We ran the rejected takeoff checklist and I contacted tower and dispatch after informing the passengers of the event. We determined the fuel state was still well above minimum and were given a new release time.I initially questioned the heading of 275 after takeoff as we normally depart with a left turn to the initial fix; but didn't think anything of it. I should have questioned the clearance before initiating the takeoff. I spoke with tower after landing and they confirmed there is a beeping sound behind the [other aircraft] read back of the takeoff clearance which was our aircraft transmitting the incorrect clearance.

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Original NASA ASRS Text

Title: CRJ-900 Captain reported a rejected takeoff after they took a takeoff clearance for another aircraft.

Narrative: [We were] told to line up and wait on runway 20R. The First Officer read back a takeoff clearance which was for an aircraft departing 20C. I thought it was for us as well; so we initiated a takeoff. Upon reaching 80 knots Tower stated 'takeoff clearance canceled; abort takeoff immediately.' I brought the aircraft to a stop and exited the runway. We were given instructions to hold short of T2 and contact Tower. We ran the rejected takeoff checklist and I contacted Tower and Dispatch after informing the passengers of the event. We determined the fuel state was still well above minimum and were given a new release time.I initially questioned the heading of 275 after takeoff as we normally depart with a left turn to the initial fix; but didn't think anything of it. I should have questioned the clearance before initiating the takeoff. I spoke with Tower after landing and they confirmed there is a beeping sound behind the [other aircraft] read back of the takeoff clearance which was our aircraft transmitting the incorrect clearance.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.