Z-series trains (Chinese: 直达特快列车) are a train service offered by China National Railway. Z stands for Zhida Tekuai (lit. 'Direct Express'). Most Z-series trains do not have any intermediary stops, not even technical stops for changing locomotives or drivers. However, some of these trains later had a few stops added to their schedule to boost the number of passengers.

Generally, Z-series trains are overnight, all-sleeper trains that have travel time of around 10–14 hours, with an average speed of around 120 kilometres per hour (75 mph), and top speed up to 162 kilometres per hour (101 mph). The majority have both soft sleepers and hard sleepers, while some Z trains have only soft sleepers, few of them also have soft seat. Most of the Z-series trains stop at either Beijing, Beijing West and Shanghai railway station or Shanghai South.

List of Z-series trains (as of August 28, 2015)

Z11 departing Beijing for Shenyang.

• Z1: Beijing West-Changsha
• Z2: Changsha-Beijing West
• Z3: Beijing West - Chongqing North
• Z4: Chongqing North - Beijing West
• Z5: Beijing West - Nanning
• Z6: Nanning - Beijing West
• Z7: Beijing - Qingdao North
• Z8: Qingdao North - Beijing
• Z9: Beijing - Hangzhou
• Z10: Hangzhou - Beijing
• Z14/11: Guangzhou East - Shenyang North
• Z12/13: Shenyang North - Guangzhou East
• Z15: Beijing - Harbin
• Z16: Harbin - Beijing
• Z17: Beijing - Harbin
• Z18: Harbin - Beijing
• Z19: Beijing West - Xi'an
• Z20: Xi'an - Beijing West
• Z21: Beijing West - Lhasa
• Z22: Lhasa - Beijing West
• Z23: Wuchang - Shenzhen (now replaced with D23)
• Z24: Shenzhen - Wuchang (now replaced with D24, which is a 'high speed' sleeper train)
• Z25/28: Wuchang - Shanghai South
• Z27/26: Shanghai South - Wuchang
• Z29: Beijing - Yangzhou
• Z30: Yangzhou - Beijing
• Z31/34: Wuchang - Ningbo
• Z32/33: Ningbo - Wuchang
• Z35: Beijing West - Guangzhou
• Z36: Guangzhou - Beijing West
• Z37: Beijing West - Wuchang
• Z38: Wuchang - Beijing West
• Z42/39: Ürümqi - Shanghai
• Z40/41: Shanghai - Ürümqi
• Z43: Beijing West - Xi'an
• Z44: Xi'an - Beijing West
• Z45/48: Wuchang - Hangzhou
• Z46/47: Hangzhou - Wuchang
• Z49: Beijing West - Chengdu
• Z50: Chengdu - Beijing West
• Z51: Beijing - Nantong
• Z52: Nantong - Beijing
• Z53: Beijing West - Kunming
• Z54: Kunming - Beijing West
• Z55: Beijing West - Lanzhou
• Z56: Lanzhou - Beijing West
• Z59: Beijing West - Fuzhou
• Z60: Fuzhou - Beijing West
• Z61: Beijing - Changchun
• Z62: Changchun - Beijing
• Z63: Beijing - Changchun
• Z64: Changchun - Beijing
• Z65: Beijing West - Nanchang
• Z66: Nanchang - Beijing West
• Z67: Beijing West - Nanchang
• Z68: Nanchang - Beijing West
• Z69: Beijing West - Ürümqi
• Z70: Ürümqi - Beijing West
• Z71: Beijing - Sanming North
• Z72: Sanming North - Beijing
• Z75: Beijing West - Lanzhou
• Z76: Lanzhou - Beijing West
• Z77: Beijing West - Guiyang
• Z78: Guiyang - Beijing West
• Z79/82: Beijing - Dalian
• Z80/81: Dalian - Beijing
• Z88/85: Xi'an - Hangzhou
• Z86/87: Hangzhou - Xi'an
• Z89: Shijiazhuang - Guangzhou
• Z90: Guangzhou - Shijiazhuang
• Z94/91: Xi'an - Shanghai
• Z92/93: Shanghai - Xi'an
• Z95: Beijing West - Chongqing North
• Z96: Chongqing North - Beijing West
• Z97: Beijing West - Hung Hom
• Z98: Hung Hom - Beijing West
• Z99: Shanghai - Hung Hom
• Z100: Hung Hom - Shanghai
• Z104/101: Xiamen - Changchun
• Z102/103: Changchun - Xiamen
• Z105: Ji'nan - Ürümqi
• Z106: Ürümqi - Ji'nan
• Z107: Beijing West - Shenzhen
• Z108: Shenzhen - Beijing West
• Z114/111: Harbin - Haikou
• Z112/113: Haikou - Harbin
• Z117: Beijing - Jilin
• Z118: Jilin - Beijing
• Z121/124: Chengdu - Guangzhou
• Z122/123: Guangzhou - Chengdu
• Z128/125: Lanzhou - Xiamen
• Z126/127: Xiamen - Lanzhou
• Z133: Beijing West - Jinggangshan
• Z134: Jinggangshan - Beijing West
• Z138/135: Guangzhou - Ürümqi
• Z136/137: Ürümqi - Guangzhou
• Z139: Beijing - Nantong
• Z140: Nantong - Beijing
• Z148/145: Shenzhen East - Zhengzhou
• Z146/147: Zhengzhou - Shenzhen East
• Z149: Beijing West - Guiyang
• Z150: Guiyang - Beijing West
• Z151: Beijing West - Xining
• Z152: Xining - Beijing West
• Z158/155: Harbin - Taizhou
• Z157/156: Taizhou - Harbin
• Z161: Beijing West - Kunming
• Z162: Kunming - Beijing West
• Z166/163: Lhasa - Shanghai
• Z164/165: Shanghai - Lhasa
• Z170/167: Qingdao - Guangzhou East
• Z168/169: Guangzhou East - Qingdao
• Z174/171: Harbin - Shanghai
• Z172/173: Shanghai - Harbin
• Z178/175: Harbin - Hangzhou
• Z176/177: Hangzhou - Harbin
• Z179: Beijing - Ürümqi
• Z180: Ürümqi - Beijing
• Z184/181: Baotou - Shenzhen East
• Z182/183: Shenzhen East - Baotou
• Z188/185: Shenyang North - Shenzhen
• Z186/187: Shenzhen - Shenyang North
• Z189: Zhengzhou - Guangzhou
• Z190: Guangzhou - Zhengzhou
• Z194/191: Shenyang North - Taiyuan
• Z192/193: Taiyuan - Shenyang North
• Z198/195: Taiyuan - Shanghai
• Z196/197: Shanghai - Taiyuan
• Z201: Beijing West - Sanya
• Z202: Sanya - Beijing West
• Z203: Beijing - Harbin
• Z204: Harbin - Beijing
• Z208/205: Changsha - Tianjin
• Z206/207: Tianjin - Changsha
• Z211/214: Guangzhou - Kunming
• Z212/213: Kunming - Guangzhou
• Z218/215: Lanzhou - Shanghai
• Z216/217: Shanghai - Lanzhou
• Z222/223: Chongqing North - Lhasa
• Z224/221: Lhasa - Chongqing North
• Z225/228: Beijing - Hefei
• Z227/226: Hefei - Beijing
• Z238/235: Harbin - Guangzhou East
• Z236/237: Guangzhou East - Harbin
• Z245/248: Changsha - Shanghai South
• Z247/246: Shanghai South - Changsha
• Z254/251: Xi'an - Shanghai
• Z252/253: Shanghai - Xi'an
• Z266/263: Lhasa - Guangzhou
• Z264/265: Guangzhou - Lhasa
• Z267/270: Hohhot East - Shanghai
• Z268/269: Shanghai - Hohhot East
• Z274/271: Xining - Qingdao
• Z272/273: Qingdao - Xining
• Z275/278: Yinchuan - Beijing West
• Z277/276: Beijing West - Yinchuan
• Z284/281: Baotou - Hangzhou
• Z282/283: Hangzhou - Baotou
• Z285: Beijing West - Nanning
• Z286: Nanning - Beijing West
• Z288/289: Kunming - Ningbo
• Z290/287: Ningbo - Kunming
• Z298/295: Baotou - Xiamen
• Z296/297: Xiamen - Baotou
• Z315: Beijing West - Hohhot
• Z316: Hohhot - Beijing West
• Z317: Beijing - Baotou
• Z318: Baotou - Beijing
• Z319: Datong - Baotou
• Z320: Baotou - Datong
• Z324/321: Lhasa - Chengdu
• Z322/323: Chengdu - Lhasa
• Z338/335: Baotou - Nanning
• Z336/337: Nanning - Baotou
• Z386/383: Sanya - Changchun
• Z384/385: Changchun - Sanya
• Z621: Beijing West - Shenyang North
• Z622: Shenyang North - Beijing West
• Z721: Beijing West - Changchun
• Z722: Changchun - Beijing West
• Z917: Lanzhou - Lhasa
• Z918: Lhasa - Lanzhou