It’s very easy to do, all you need is just add your user to the wireshark group, e.g.

sudo adduser hobba wireshark

so this makes user hobba able to capture packets without requiring sudo privileges.

Enjoy!

Tested on LinuxMint 18.1 (based on Ubuntu 16.04)

Source: https://anonscm.debian.org/viewvc/collab-maint/ext-maint/wireshark/trunk/debian/README.Debian?view=markup