The present invention concerns a system (1; 101; 201; 301; 401; 501; 601; 701; 801; 901; 1001; 1101; 1201) for dispensing a fluid (L; L1, L2), comprising a container (C; C′) for the fluid (L; L1, L2) and a device (10; 410; 510) for dispensing the fluid (L; L1, L2). The device (10; 410; 510) comprises a collapsible chamber (20; 420) which defines a volume (V; V′) suited to receive a quantity of the fluid (L; L1, L2) to be dispensed. The chamber (20; 420) is defined by a first portion (30; 430) and by a second portion (40) mutually coupled with each other, wherein the first portion (30; 430) comprises an area connected to the container (C; C′) and the second portion (40) is constituted by a portion of the container (C; C′).