Al-Najma Club was merged with Al Wahda, which won the Bahraini King's Cup in 1988, 1992 and 1994, and Al-Arabi, which won the Bahraini King's Cup in 1969 and the 1974–75 Bahraini Premier League; then with Al-Hilal, Al-Qadisiya, which played the Bahraini King's Cup final in 2000, and Ras Al-Rumman in 2002.
Al-Ahli Club is considered to be Al Najma's fiercest rival. The two teams contest the derby called The Capital's Derby. Both teams are considered to be the most decorated in the capital city. However, Al Najma fans are also known to have friendly relations towards Muharraq fans. Sometimes Al Najma fans could be spotted attending Muharraq matches and vice versa, when their own club is no longer in contention for the title.