This is a regularly updated list of bans of types of plastics, sorted by type of entity (country, municipality, company, etc.). Note that, when it loads, it doesn’t start at the top, so you need to scroll up and to the left. Or you can view the spreadsheet here.
EcoOptimism has addressed plastics issues a number of times, including here most recently. And with new developments, especially China’s decision to no longer accept plastic waste, restrictions and bans on plastics are rapidly growing.
If you know of bans – existing or proposed – that aren’t listed here (or corrections needed), please let me know via the contact link at the bottom of this page.