How do I manually trigger an InputField's event, such as "On End Edit"?

Say I have a reference to a UI Input Field, but I don’t know what object it came from, and I don’t know what functions are assigned to it’s events, is there any way for me to “force” an event to trigger via C# script?

Yes, assuming you have a reference to the InoutField you can call Invoke on the event you want to trigger.