陈谌,字季方,潁川許縣人。与兄长陳紀一样道德品行俱佳,其父陳寔曾评论他们俩兄弟说「元方难为兄,季方难为弟」,即两人难分高下之意。「难兄难弟」的典故也出于此。陈谌曾任司空掾,很早去世。有子陳忠,字孝先。
世系圖
太丘長 陳寔 | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
大鴻臚 陳紀 | | | | | | 陳夔 | | 陳洽 | | 陳諶 | | | | | | | | | | 陳休 | | 陳光 |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
潁陰靖侯 陳群 | | | | | | | | | | | | | | 陳忠 | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | |
潁陰穆侯 陳泰 | | | | | | | | | | | | | | 青州刺史 陳佐 | | | | | | | | | | 陳和 | | 廷尉 陳坦 |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | |
潁陰侯 陳恂 | | 潁陰侯 陳溫 | | | | | | | | | | 廣陵元公 陳準 | | 陳戴 | | 陳徵 | | | | | | 陳堪 |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | |
| | | | | | | | | | | | | | | | 廣陵凱公 陳眕 | | 陳匡 | | 陳規 |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | 廣陵郡公 陳逵 | | 陳達 | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | 廣陵郡公 某 | | 後裔為陳朝皇帝 長城陳氏 |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | 廣陵郡公 某 | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | 廣陵郡公 某 | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | 陳準七世孫 廣陵公 陳茂先 | | | | | | | | | |