NOVELTY - An aromatic amine derivative (5-9) having substituent (A) containing dibenzofuran residue and substituent (B) containing tricyclic residue or carbazole residue, is new. The substituents (A, B) are different and are coupled with nitrogen atom in the molecule.    USE - New aromatic amine derivative used as hole transport material for organic electroluminescent element (claimed). Uses include but are not limited to backlight of flat panel display of wall-mounted television, copier, printer, liquid crystal display, measuring instrument, display board, marker lamp, electrophotographic photoreceptor, photoelectric transducer, solar cell and image sensor.    ADVANTAGE - The organic electroluminescent element containing the aromatic amine derivative is manufactured with improved productivity. The organic electroluminescent element has high efficiency and improved lifetime.    DETAILED DESCRIPTION - An aromatic amine derivative chosen from formulae: N(-Ar2)(-Ar3)-Ar4 (5), N(-Ar5)(-Ar6)-L4-N(-Ar7)(-Ar8) (6) and chosen from formulae (7-9) having substituent (A) containing dibenzofuran residue and substituent (B) containing tricyclic residue or carbazole residue, is new. The substituents (A, B) are different and are coupled with nitrogen atom in the molecule.    Ar2-Ar25=at least one being dibenzofuran residue of formula (1) and remaining being tricyclic residue of formula (2) or carbazole residue of formula (3) or 6-50C aryl (all optionally substituted by group A);    group (A)=1-10C optionally branched alkyl, 3-10C cycloalkyl, 3-10C trialkylsilyl, 18-30C triaryl silyl, 8-15C alkylaryl silyl having 6-14C aryl portion, 6-16C aryl, halo or cyano;    L1,L2=single bond or 6-50C arylene optionally substituted by group (A);    L3-L12=6-50C arylene optionally substituted by group (A);    X=O or -N(Ar1)-;    Ar1=6-14C aryl optionally substituted by group (A);    a,c,e,f=0-4;    b,d=0-3;    R1-R6=group (A);and    or adjacent R1-R6=ring.    The hydrogen atom in the derivative contains deuterium atom. An INDEPENDENT CLAIM is included for organic electroluminescent element, which consists of organic thin film layer containing the aromatic amine derivative and comprising light emitting layer(s) provided between anode and cathode.