María Isabel Arrieta Gálvez or Maribel Arrieta (August 22, 1934 – August 31, 1989) was a Salvadoran television host, model and beauty pageant titleholder who was crowned Miss El Salvador 1955 and represented her country at Miss Universe 1955 in Long Beach, California.

[1] Arrieta ultimately finished as first runner-up, losing to Hillevi Rombin, but not before taking home the title of "Miss Congeniality".

In the Miss Universe 1955 pageant, Arrieta became the first, and so far, the only, Salvadoran contestant to reach the top 5; finishing as first-runner up.

[citation needed] After Miss Universe, Arrieta starred in a Mexican film called "Nos veremos en el cielo" ("We'll meet in heaven"), marking the first, and the last time she appeared in a movie.

[citation needed] Arrieta returned to El Salvador in 1956, where the President at the time, Óscar Osorio made her the Consul-General to Belgium.