The invention provides a nonaqueous dispersant which can make dispersoid such as organic power or nonorganic power disperse in a nonaqueous solution in a high concentration manner, and meanwhile, can endow excellent redispersibility to the dispersoid. The nonaqueous dispersant is characterized by including a polyether-type compound which is represented in formula (1), has a molecular weight in the range of 1,000-10,000, and has an HLB value of 1.0-5.0 obtained by means of Griffin method, wherein A1O represents oxygen ethylidene, a represents an average addition moll number of the oxygen ethylidene represented by the A1O and is in the range of 1-10. A2O represents oxygen propylidene, b represents an average addition moll number of the oxygen propylidene represented by the A2O and is in the range of 1-30.A and b stratify the relation of 0.05<=a/b<=0.75,and 5<=a+b<=30. R represents hydrocarbyl with a hydrogen atom number and a carbon number of 1-4. n is 1-4.
