Ward and Cahill missed Saturday's 2-0 win away to Burnley with knee injuries and Dann, who deputised for the ex-Chelsea centre back at Turf Moor, suffered an ankle issue and had to be withdrawn in the second half.
It means Mamadou Sakho is likely to make just his second league start of the season for the visit of the Cherries, but Roy Hodgson has no other fitness concerns.
Hodgson also says he has no problem with throwing Sakho straight back into the side despite his lack of action.
A knee injury and then a muscle problem had hampered the player's start to the campaign, but the former Liverpool ace will hope to kick on again at Selhurst Park when he figures against the Cherries.
"Mamadou Sakho is good," Hodgson said. "He's been fit to play for a period but of course we were blessed at centre-back with good performances from Gary Cahill and James Tomkins.
"He's had to wait for his chance, but he has played a game for the Under-23s, played on Saturday for a considerable period in the second half, so I have no fears about his fitness."
Meanwhile, Bournemouth will have captain Simon Francis and midfielder Philip Billing back from suspensions at Selhurst Park.
Defender Francis was sent off for two bookings against Wolves on November 23, while Billing also sat out Saturday's 3-2 defeat at Tottenham due to a one-game ban following his fifth yellow card of the season.
Cherries winger Harry Wilson is pushing for a start after scoring twice off the bench against Spurs and full-back Adam Smith could return following illness, but forward Joshua King is not expected to overcome a hamstring injury in time to face the Eagles.