De or het startnotitie?

The correct Dutch article is:

de startnotitie

Rule Words ending in -tie and -sie: almost always de. See the rule

How to use startnotitie

the startnotitiede startnotitie
this startnotitiedeze startnotitie
that startnotitiedie startnotitie
our startnotitieonze startnotitie
your startnotitiejouw startnotitie
every startnotitieelke startnotitie
which startnotitie?welke startnotitie?
a big startnotitie / the big startnotitieeen grote startnotitie, de grote startnotitie