This is a top 9 of terrorist incidents which took place in 2017, including attacks by violent non-state actors for political, religious, or ideological motives. During this time period, there were 480 Islamic attacks in 39 countries, in which 3297 people were killed and 4014 injured.
#1. 2017.01.01 – Turkey, Istanbul
Killed – 39, Injured- 69
A man screaming praises to Allah guns down thirty-nine celebrants at a New Year’s Eve party at a nightclub. Source