Astronism in Saint Kitts and Nevis refers to the presence of the Astronist religion in the Federation of Saint Christopher and Nevis, as part of the worldwide Astronist Institution.

Astronism in Saint Lucia refers to the presence of the Astronist religion on the island nation of Saint Lucia, as part of the worldwide Astronist Institution.

Astronism in Saint Martin refers to the presence of the Astronist religion in the French Collectivity of Saint Martin, as part of the worldwide Astronist Institution.

Astronism in Saint Vincent and the Grenadines refers to the presence of the Astronist religion in the Caribbean islands nation, as part of the worldwide Astronist Institution.

Astronism in Samoa refers to the presence of the Astronist religion in the Independent State of Samoa, as part of the worldwide Astronist Institution.

Astronism in San Marino refers to the presence of the Astronist religion in the Republic of San Marino, as part of the worldwide Astronist Institution.

Astronism in Saudi Arabia refers to the presence of the Astronist religion in the Kingdom of Saudi Arabia, as part of the worldwide Astronist Institution.

Astronism in Senegal refers to the presence of the Astronist religion in the Republic of Senegal, as part of the worldwide Astronist Institution.

Astronism in Serbia refers to the presence of the Astronist religion in the Republic of Serbia, as part of the worldwide Astronist Institution.

Astronism in Seychelles refers to the presence of the Astronist religion in the Republic of Seychelles, as part of the worldwide Astronist Institution.