Luka Doncic may be a Dallas Maverick, but he's clearly never forgotten where he's come from -- 'cause he just sent a bunch of gifts to kids at a hospital in his Slovenian hometown.
TMZ Sports has learned ... the NBA All-Star just directed a special delivery to the Children's Hospital of the University Medical Center Ljubljana -- surprising almost 200 kids with all kinds of goodies to brighten up their holidays.
The shipment was filled with toys -- like LEGOS and dollhouses -- as well as headphones, Jordan sportswear, and gift cards.