B737-700 first officer reported a near-collision occurred after turning onto the wrong taxiway.

Attributes
ACN	1607107
Time
Date	201812
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Light	Night
Aircraft 1
Make Model Name	B737 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	Taxi
Flight Plan	IFR
Aircraft 2
Make Model Name	B737 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	Taxi
Flight Plan	IFR
Person 1
Function	Pilot Not Flying First Officer
Qualification	Flight Crew Multiengine Flight Crew Air Transport Pilot (ATP) Flight Crew Instrument
Experience	Flight Crew Last 90 Days 535
Events
Anomaly	Aircraft Equipment Problem Less Severe Conflict Ground Conflict Critical Deviation - Procedural Clearance Flight Deck / Cabin / Aircraft Event Illness Ground Incursion Taxiway

Narrative:

The taxi instructions from ground were; 'taxi to 1R via B; D; cross 26R.' we made an incorrect right turn on C. While on charlie facing west a company aircraft approached opposite direction at a fairly high rate of speed. The opposite direction aircraft would have made contact; wing to wing if he would have continued. We stopped immediately and set the parking brake and said something on frequency. The opposite direction aircraft turned hard left and avoided our wings contacting each other. As the first officer; I should have been more proactive in monitoring the aircraft position during taxi out. I believe I was heads down on my 10-9 for a few seconds during this critical time.

Original NASA ASRS Text

Title: B737-700 First Officer reported a near-collision occurred after turning onto the wrong taxiway.

Narrative: The taxi instructions from Ground were; 'Taxi to 1R via B; D; cross 26R.' We made an incorrect right turn on C. While on Charlie facing west a Company aircraft approached opposite direction at a fairly high rate of speed. The opposite direction aircraft would have made contact; wing to wing if he would have continued. We stopped immediately and set the parking brake and said something on frequency. The opposite direction aircraft turned hard left and avoided our wings contacting each other. As the First Officer; I should have been more proactive in monitoring the aircraft position during taxi out. I believe I was heads down on my 10-9 for a few seconds during this critical time.

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.