The father-of-three died aged 51 after a suspected heart attack last Saturday.
He leaves behind wife Linda and children Christopher, Deborah and Sophie.
The Labour councillor was elected to Glasgow City Council in 1995 and represented the Shettleston ward.
His funeral will be held at St Andrew's Cathedral in Clyde Street at 10am.
Fellow politicians and Lord Provost Sadie Docherty are expected to attend.
A vigil will be held in the cathedral tomorrow night at 6.30pm.
Known as one of the most experienced and well respected local politicians, Mr Ryan has been praised for his work within the city council, including helping to introduce the Living Wage and Commonwealth Apprenticeship Initiative.
During his political career he held a number of high-profile roles, including executive member for business and the economy.
Fellow councillors have this week paid tribute to their colleague, including Glasgow City Council leader Gordon Matheson.
He said: "George was a highly respected and experienced Labour councillor and trade union activist, as well as holding down a professional career in health and safety.
"He was astute, warm and popular, and a big and influential figure in the City Chambers.
"His political background made him ideally suited to laterally lead on personnel matters within the council.
"The people of Shettleston have lost a powerful champion and the city has lost a fighter for social justice."