Ingroup bias is one of the most basic intergroup phenomena and has been consistently demonstrated to be increased under conditions of existential threat. In the present research the authors question the omnipresence of ingroup bias under threat and test the assumptions that these effects depend on the content of social identity and group norm salient in a situation. In the first two studies cross-categorization and recategorization manipulations eliminated and even reversed mortality salience effects on bias in relations between English and Scottish students (Study 1) as well as English and French people (Study 2). In the third study the specific normative content of a given social identity (collectivism vs. individualism) was shown to moderate mortality salience effects on ingroup bias. The results of these studies suggest a social identity perspective on terror management processes.