The naturalisation ceremony took place at Divi Little Bay Beach Resort in the presence of His Excellency Governor Eugene Holiday.
The 387 persons hailed from 13 nationalities, ages eight to 58.
Heyliger also calls on the new citizens to consider a life of service to others, staying true to their core values as citizens and family members.
"Congratulations on becoming citizens. This is the Sint Maarten dream. Hundreds have taken this route in the past and continue to make a contribution to the national wellbeing of this country. Persons who take the oath have dedication and a sense of civic responsibility to the country.
Immigrants have benefited from this great country of ours. Their contributions have been made and continue to be made in socio-cultural and economic sectors to name a few, and that is how we have progressed and developed over the decades as a nation.
To the naturalized citizens, we look forward to you in advancing our national development as hundreds have done seeking prosperity and opportunity of country Sint Maarten in the 21st century.
We look forward to you being an engaged citizen, and not only enjoy the privileges that flow from citizenship, but to serve and to give back to your country.
Join social groups in our community, sign-up with your parents-teachers association, or form a community group in your neighbourhood. We all have the tasks of making our country even better for the next generation. Remember, our differences are what make our nation's diversity so valuable.
Congratulations once again on becoming our nation's newest citizens. May God bless you all and May God bless Country Sint Maarten," Vice Prime Minister Hon. Theo Heyliger said on Wednesday.