De or het elftalcommissie?

The correct Dutch article is:

de elftalcommissie

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

How to use elftalcommissie

the elftalcommissiede elftalcommissie
this elftalcommissiedeze elftalcommissie
that elftalcommissiedie elftalcommissie
our elftalcommissieonze elftalcommissie
your elftalcommissiejouw elftalcommissie
every elftalcommissieelke elftalcommissie
which elftalcommissie?welke elftalcommissie?
a big elftalcommissie / the big elftalcommissieeen grote elftalcommissie, de grote elftalcommissie