The trio join club great Scott Pendlebury in extending their careers at the Magpies next season.
Pendlebury announced in June that he was playing on, with Sidebottom, Howe and Hoskin-Elliott's new contracts announced on Thursday.
"All four are highly valued and play integral roles for our program both on and off the field," Collingwood's list manager Justin Leppitsch said.
"Their leadership and experience are invaluable to our environment and each of them play a key role in educating and guiding our next generation of young talent."
Sidebottom, a dual premiership player who turns 34 in January, will continue for a 17th AFL season alongside his great mate Pendlebury, who is embarking on a 20th AFL season.
The 34-year-old Howe has been vice-captain for the past seven years after joining Collingwood from Melbourne for the 2016 season.
Hoskin-Elliott, who turns 31 on Monday, transferred to the Magpies from GWS at the end of 2016.
Meanwhile, Adelaide midfielder Sam Berry has inked a two-year contract extension to remain with the Crows.
The Victorian-born on-baller has played 57 AFL games since being drafted by Adelaide in 2020.Â
8°C