Northern and Southern Courts period most commonly refers to the Nanboku-chō period in Japan, from 1336 to 1392.

Northern and Southern Courts period may also refer to:

• Northern and Southern dynasties period in China, from 420 to 589
• North-South States Period in Korea, from 698 to 926
• Northern and Southern Courts period (Vietnam), from 1533 to 1592

• Red Tag Bastards
• Red tail
• Redtail
• Red Tail
• Redtail butterflyfish
• Redtail catfish
• Red-tail catfish
• Red tail catfish
• Red tail (disambiguation)
• Red-tailed amazon
• Red-tailed Ant-Thrush
• Red-tailed ant thrush
• Red-tailed bamboo pitviper
• Red tailed Black Cockatoo
• Red-tailed Black-Cockatoo
• Red-tailed Black-cockatoo
• Red-tailed Black Shark
• Red tailed boa
• Red-tailed bristlebill
• Red tailed catfish
• Redtailed catfish
• Red-tailed catfish
• Red-tailed chipmunk
• Red-tailed comet
• Red-tailed dwarf puffer