Nowell, the Lions wing who is highly rated by Eddie Jones, played for Exeter in Saturday’s Champions Cup victory over La Rochelle but is excluded from the 34 names picked for the 2020 Championship.
Also missing from the 32 players who helped England reach the World Cup final are Jack Singleton, Mark Wilson, Dan Cole, Billy Vunipola, Henry Slade, Piers Francis, Joe Cokanasiga, Ben Spencer and Ruaridh McConnochie, Jack Nowell.
Many of the Japan 2019 casualties are injured. However, Jones has opted against calling up specialist number eight cover for Billy Vunipola.
Competing to deputise for Vunipola in the back row are Tom Curry, Lewis Ludlam and Ben Earl.
Earl is among eight uncapped players who travel to Portugal on Thursday for a pre-Six Nations training camp with the exciting Saracens prop joined by hooker Tom Dunn, wing Ollie Thorley, centre Fraser Dingwall, full-back George Furbank, lock Alex Moon, prop Will Stuart and fly-half Jacob Umaga.
Umaga, nephew of former New Zealand captain Tana, is included ahead of Marcus Smith who trained with England in the build-up to the World Cup.
England launch their Six Nations title quest against France in Paris on February 2.
“It is always about winning the next game so we have picked the best squad available,” Jones said.
“At the same time we wanted to bring some young players in because we need to keep building our depth so for those new players it’s an exciting opportunity for them.”
Luke Cowan-Dickie (Exeter Chiefs, 21 caps), Tom Curry (Sale Sharks, 19 caps), Tom Dunn (Exeter Chiefs, uncapped), Ben Earl (Saracens, uncapped), Charlie Ewels (Bath Rugby, 12 caps), Ellis Genge (Leicester Tigers, 14 caps), Jamie George (Saracens, 45 caps), Ted Hill (Worcester Warriors, 1 cap), Maro Itoje (Saracens, 34 caps), George Kruis (Saracens, 41 caps), Joe Launchbury (Wasps, 62 caps), Courtney Lawes (Northampton Saints, 81 caps), Lewis Ludlam (Northampton Saints, 6 caps), Joe Marler (Harlequins, 68 caps), Alex Moon (Northampton Saints, uncapped), Kyle Sinckler (Harlequins, 31 caps), Will Stuart (Bath Rugby, uncapped), Sam Underhill (Bath Rugby, 15 caps), Mako Vunipola (Saracens, 58 caps), Harry Williams (Exeter Chiefs, 18 caps)
Elliot Daly (Saracens, 39 caps), Ollie Devoto (Exeter Chiefs, 1 cap), Fraser Dingwall (Northampton Saints, uncapped), Owen Farrell (Saracens, 79 caps), George Ford (Leicester Tigers, 65 caps), George Furbank (Northampton Saints, uncapped), Willi Heinz (Gloucester Rugby, 9 caps), Jonathan Joseph (Bath Rugby, 47 caps), Jonny May (Leicester Tigers, 52 caps), Ollie Thorley (Gloucester Rugby, uncapped), Manu Tuilagi (Leicester Tigers, 40 caps), Jacob Umaga (Wasps, uncapped), Anthony Watson (Bath Rugby, 42 caps), Ben Youngs (Leicester Tigers, 95 caps)