The decision comes in the wake of Jacques Rudolph's retirement. Rudolph stood down in the Championship in May, with Hogan stepping in on an interim basis, but he led Glamorgan to Finals Day in the NatWest Blast before his career came to an end
Ingram has turned himself into a white-ball specialist after a prolific limited-overs season fired his ambition to play in more global T20 tournaments worldwide.
The standout performer of any county in limited overs cricket over the last two seasons, Ingram struck 1,026 runs and five centuries in white-ball competitions during 2017 and was named the PCA MVP award winner for the T20 Blast in 2016 and One-Day Cup in 2017.
Ingram will feature for the Adelaide Strikers in the Big Bash later this year but his only experience in the IPL came with the Delhi Daredevils before he joined Glamorgan at the end of 2014.
Hogan will now continue to lead the side in red-ball cricket next term, while Ingram will have the captaincy duties in the One-Day Cup and T20 Blast competitions.
In the first two games under Hogan's leadership Glamorgan secured back-to-back victories against Durham at Swansea and at New Road over Worcestershire, the eventual Division Two champions, before finishing seventh in Division Two with a line-up featuring up to eight Academy graduates towards the end of the season.
Glamorgan Chief Executive Hugh Morris, said: "We are very fortunate to have two excellent leaders within the squad and the decision to appoint Michael and Colin was unanimous by our Committee. By splitting the captaincy during a busy season both players can bring fresh impetus across the different formats."