Can't delete iCloud calendars

I am having the exact same problem. Can anyone suggest a solution please?

Okay, I have found the soultion!

First, log in to your icloud.com account on your Mac/PC. Make sure all your data is there in the online Calendar and Reminders apps.

Next, on all your iOS devices (iPhone, iPad etc), go to Settings>iCloud and turn off Calendars and Reminders. A pop-up dialogue box will appear - select the "Delete from iPhone/iPad" option. Now check in the Calendar and Reminders Apps on your iDevice that all your data has indeed been deleted from your iDevice.

Now go back to your iCloud.com webpage on your Mac/PC and delete all the unwanted calendars and reminder lists that you want to get rid of. Notice that this time those calendars and lists won't reappear.

Now turn on Calendar and Reminder syncing on your iDevices via Settings>iCloud. Your data will be restored to your iDevice and you will see that the unwanted Calendars and lists no longer show up.

Hope this helps!

This worked perfectly.

Perfect 🙂. Thank you.

Im glad it worked for you both CapeEagle & PlutoM... Cheers! 🙂

Good News - It also worked for me. Thanks for the help.

Phew! Thanks Firoze - what a relief to get rid of those!

Awesome! Simple, and it works most importantly. 🙂 Thanks!

Perfect solution, was getting nuts with for iDevices to sync

Another big THANK YOU!!!! I cannot understand why Apple cannot fix this problem.

Excellent! Thank you.

Thanks, your solution worked perfectly. I thought I'd never get rid of some unwanted calendars.