Kevin Devaney has rejoined Bohemians after a season at Galway United while Ian Morris and Philip Gannon have re-signed with the club ahead of the 2018 SSE Airtricity League season.
Devaney, 27, first joined the Gypsies from Finn Harps in August 2012 making 56 league appearances before departing for his hometown club Sligo Rovers for the 2015 season.
Manager Keith Long has kept tabs on the midfielder.
"Unfortunately Kevin moved to Sligo with Owen Heary before I joined the club so I never got a chance to work with him.
"He's an explosive player, he did some damage against us for Galway this year and gives us pace and options out wide. I'm really looking forward to working with him."
Former Blackpool midfielder, Morris, joined Bohs in May 2016 as Youth Development Officer and was subsequently signed for the first team later that summer.
Having come through the youth ranks at Leeds, the 30-year-old remained in the English Football League during spells with Blackpool, Scunthorpe, Torquay and Northampton.
He returned to Ireland in 2015 and had brief spells with St Patrick's Athletic and Glenavon before joining Bohs where he has lined out in both midfield and defence.
"Morro is a player with vast experience and someone gives us great leadership," commented Long. "You can trust him playing in several positions, which is really important for us."
Finglas native Gannon, who came through the West Brom academy joined from Longford Town this time last year.
"Because he's been around the division a couple of years, sometimes people forget Philly's still only a young boy," Long said of the 21-year-old midfielder. "There's lots of development to come. He has had his ups and downs but we feel as a backroom team that we've seen signs of great potential."
Long now has 21 players under contract at Bohemians for next season: Oscar Brennan, Dan Byrne, Dan Casey, Dinny Corcoran, Rob Cornwall, Kevin Devaney, Philip Gannon, Jamie Hamilton, Paddy Kavanagh, Paddy Kirk, JJ Lunney, Cristian Magerusan, Colin McCabe, Eoghan Morgan, Ian Morris, Derek Pender, Fuad Sule, Shane Supple, Warren O’Hora, Keith Ward, John Ross Wilson.