Abstract: A ferroelectric liquid crystal composition comprising achiral smectic liquid crystal compounds(s) and optically active compounds and, which composition comprises the following components A, B and C in 50-91%, 4-30% and 5-20%, each by weight, respectively:Component A: at least one of compounds of the formula (A) having smectic C phase ##STR1## R.sup.1 and R.sup.2 each are same or different, linear or branched alkyl, alkoxy or alkanoyloxy each of 1-18 C, X is H, halogen or CN, l, m and n each one 1 or 2 and the sum of l, m and n is 1 or 2,component B: at least one of optically active compounds of the formula (B): ##STR2## and component C: at least one of optically active compounds of the formula ##STR3## wherein each R.sup.3 and R.sup.5 is a linear or branched alkyl or alkoxy of 1-18C, each R.sup.4 and R.sup.