In using, the fabrics and the garment products are deformed by loading force, which is usually lower than broken strength. Creep is a deformation commonly seen in fabrics and garments. This paper will refer to investigate the creep and creep recovery phenomenon of knitted fabrics which are widely used in Vietnam. Three commonly weft knitted fabrics in Vietnam are single, Rib 1x1 and interlock were examined on this research. The cotton yarn Ne40 has been used for all investigated knitted fabrics. Five values of loop length in knitting have been examined for every kind of fabrics knitted, which are 352,362,372,382,392
413,428,443,458,473
343,353,363,373,383 (mm/100 stitchs) for single jersey, rib 1x1 and interlock cotton knitted fabircs, respectivly. It was found that the creep deformation of single and interlock is tend to direct proportional with the their loop length while the creep recovery of these two fabricd is inverse proportionnal with their loop length. The creep and creep recovery of rib fabric changes without any regular but the rib fabric with average of loop length (443 mm/100 stitchs) is best in creep and creep recovery. This rib fabric is most stability in dimension and in extension, which has been reported in two other research.