The trade show was originally scheduled to be held on 17-19 November 2020, in Malta.
However, the decision to delay the event has been taken in line with advice from Malta's health authorities.
SiGMA Group founder, Eman Pulis, said: “SiGMA 2020 was due to take place this November; the show was sold out and we were extremely excited for this edition to take place.
"However, COVID-19 had other plans and we have therefore decided to postpone the show for another three months.
"I must send my gratitude to all the exhibitors who agreed to move their participation at SiGMA with us; I look forward to the new dates and I look forward to welcoming you all with arms wide open."
SiGMA joins the likes of G2E (both in Las Vegas and Macau), ICE London and iGB Live on the list of either postponed or cancelled gaming trade show events for 2020.