Diphenylbutadiyne is the hydrocarbon with the formula (C<sub>6</sub>H<sub>5</sub>C<sub>2</sub>)<sub>2</sub>. It is a member of the diyne chemical class and can be made via the Glaser coupling of phenylacetylene However, a variety of other synthesis methods have been developed.
Diphenylbutadiyne forms a variety of metal-alkyne complexes. One example is the organonickel complex (C<sub>5</sub>H<sub>5</sub>Ni)<sub>4</sub>C<sub>4</sub>(C<sub>6</sub>H<sub>5</sub>)<sub>2</sub>.