The 2016 AFC Champions League group stage was played from 23 February to 4 May 2016.
[2] The draw for the group stage was held on 10 December 2015, 16:00 MYT (UTC+8), at the Petaling Jaya Hilton Hotel in Kuala Lumpur, Malaysia.
If tied on points, tiebreakers would be applied in the following order (Regulations Article 11.5):[2] The schedule of each matchday was as follows.
[1][2] On 25 January 2016, the AFC announced the following changes to the schedule due to Saudi Arabia's refusal to play in Iran after the attack on their diplomatic missions in Iran and the ensuing deterioration of Iran–Saudi Arabia relations:[7] After the changes, all matches between teams from Iran and Saudi Arabia (including possible play-off winners) were rescheduled to be played on matchdays 5 and 6 (19–20 April and 3–4 May).
On 31 March 2016, the AFC announced that they have approved the neutral venues, with teams from Iran moving their home matches to Oman, and teams from Saudi Arabia moving their home matches to Qatar and the United Arab Emirates.