Masortim (Hebrew: מסורתיים, lit. "Traditional [people]", also known as Shomrei Masoret, שומרי מסורת, "upholders of tradition")' is an Israeli term of self-definition, describing those who perceive and describe themselves as neither strictly religious (Dati) nor secular (Hiloni).
Masortim observe a number of minhagim and several basic religious commandments that are the most recognizable symbols of the Jewish tradition. In doing so, they seek to express their affinity to the Jewish people and especially their will to continue their family's religious customs and traditions, as they maintain that there is a need to preserve the traditional values and customs, in order to guard the continuity of the existence of the Jewish people.
Masortim are a distinct concept than Conservative Judaism's alternative name, "Masorti Judaism".
The majority of Shomrei Masoret are Mizrahi Jews, i.e. those of oriental origin (i.e. Middle East, Central Asia and North Africa). The exact number of the Masortiim is hard to determine, since it is based upon the self-definition of the participants in surveys. However, according to Israel Central Bureau of Statistics, as of 2006, 39% out of the Jewish population within Israel define themselves as Masortim.Pew Research Center estimates the masorti at 29% of Jews in Israel (or 23% of all Israeli adults).