Uranocene, U(C8H8)2, is an organouranium compound composed of a uranium atom sandwiched between two cyclooctatetraenide rings.

Uranocene, a member of the "actinocenes," a group of metallocenes incorporating elements from the actinide series.

[3] Considering the molecule to be U4+(C8H82−)2, the η8-cyclooctatetraenide groups are planar, as expected for a ring containing 10 π-electrons, and are mutually parallel, forming a sandwich containing the uranium atom.

[1][12] In addition to finding vibrational frequencies, Raman spectra indicate the presence of a low-lying (E2g) excited electronic state.

Analogous compounds of the form M(C8H8)2 exist for M = (Nd, Tb, Yb, Th, Pa, Np, and Pu).