Citizenship at birth through a Bahraini father (foundling exception)
No general jus soli. Article 5 (as amended) retains only a foundling rule: a person born in Bahrain to unknown parents is Bahraini, and an abandoned infant is presumed born there unless the contrary is proved. Ordinary nationality at birth follows a Bahraini father (article 4).
Sources: Bahraini Citizenship Act 1963, consolidated (Legislation & Legal Opinion Commission)