Fuzzy set theory, allows for degrees of membership and introduces
membership functions to model imprecise information. Q-fuzzy set theory
extends this by incorporating linguistic quantifiers for a flexible
representation of uncertainty. Intuitionistic fuzzy set theory, adds a
separate degree of non-membership for a more comprehensive portrayal of
uncertainty. Refined intuitionistic fuzzy set theory, further enhances
precision by subdividing membership and non-membership values,
addressing the limitation of singular assignments in representing
uncertainty. This research delves into the foundational aspects of
refined intuitionistic Q-fuzzy set (RIQFS) and investigates several key
properties associated with this specialized mathematical framework, like
subset, equal set, null set, and complement set within the framework of
refined intuitionistic Q-fuzzy set. The investigation also involves
conceptualizing basic settheoretic operations, including union,
intersection, extended intersection, restricted union, restricted
intersection, and restricted difference. Furthermore, the analysis
explores fundamental laws, elucidating each with illustrative examples
to facilitate a clearer understanding.