This article aims to single out quasi-conditional constructions in Catalan and describe their main types. The author proceeds from the hypothesis that Catalan quasi-conditional constructions must show considerable similarity with quasi-conditional constructions in Russian, English, French, and other languages. The number of the constructions addressed is about 1 000 examples from Catalan texts by native Catalan authors and about 2 000 examples from Catalan texts by non-Catalan authors, selected by total sampling. The paper shows that quasi-conditional constructions, although formally similar to conditional constructions, differ on certain points from them. Their protasis does not express hypothetical condition, apodosis doesn’t imply consequence, the condition-consequence meaning is often missing from them altogether. In contrast to conditional constructions, transformation of quasi-conditionals ones into formally narrative constructions doesn’t change their meaning. Quasi-conditional constructions can be split into five major groups: presumptive constructions, constructions with protasis in the function of parenthesis, conditional-evaluative constructions, conditional-causal constructions, and logical conclusion constructions. The observables selected as criteria for this classification include: Construction meaning (comparative, existential, evaluative, causative constructions etc.); Changeability of the main dependent clause order; Use of markers. Both my analysis and literature on conditional constructions in other languages confirm that the structure of Catalan quasi-conditional constructions is similar to their counterparts in other languages. The findings can be used for teaching purposes as well as for research in Catalan, other Romance languages, or in typology/syntax.