Electrically-induced electron spin polarization is imaged in n-type ZnSe epilayers using Kerr rotation spectroscopy. Despite no evidence for an electrically-induced internal magnetic field, currentinduced in-plane spin polarization is observed with characteristic spin lifetimes that decrease with doping density. The spin Hall effect is also observed, indicated by an electrically-induced out-ofplane spin polarization with opposite sign for spins accumulating on opposite edges of the sample. The spin Hall conductivity is estimated as 3 ± 1.5 Ω −1 m −1 /|e| at 20 K, which is consistent with the extrinsic mechanism. Both the current-induced spin polarization and the spin Hall effect are observed at temperatures from 10 K to 295 K. PACS numbers: 75.25.Pn, 75.25.Dc, 71.70.Ej, 78.47.+p The ability to manipulate carrier spins in semiconductors through the spin-orbit (SO) interaction is one of the primary motivations behind the field of spintronics. SO coupling provides a mechanism for the generation and manipulation of spins solely through electric fields [1,2,3], obviating the need for applied magnetic fields. Much of the recent interest in the consequences of SO coupling in semiconductors surrounds the production of a transverse spin current from an electric current, known as the spin Hall effect. Though predicted three decades ago [4], the first experimental observations of the spin Hall effect have appeared only recently [5,6,7]. Subsequent work into the spin Hall effect has addressed the importance of extrinsic or intrinsic mechanisms of the spin Hall conductivity [7,8,9,10], the nature of spin currents [11,12], and the potential ability both to produce and to detect spin Hall currents using only electric fields [13,14].Previous experiments showing electrical generation of spin polarization in semiconductors through SO coupling have been performed at cryogenic temperatures in GaAs, the archetypical III-V zincblende semiconductor. In contrast, the wide band gap and long spin coherence times of II-VI semiconductors allow many spin-related effects to persist to higher temperatures than typically observed in the GaAs system [15]. Many of the effects of SO coupling on the electrical manipulation of spin polarization have not been studied in detail in these compounds. In ZnSe, the extrinsic SO parameter λ ZnSe = 1.06 eÅ 2 , as calculated from an extended Kane model, is five times less than that in GaAs, with λ GaAs = 5.21 eÅ 2 [10, 16]. Despite weaker SO coupling, large extrinsic SO skewscattering has been observed in the anomalous Hall effect in magnetically doped ZnSe [17]. In this Letter we optically measure electrically-induced spin polarization in ZnSe epilayers that persists to room temperature. We observe in-plane current-induced spin polarization (CISP) in ZnSe with n-doping ranging over two orders of magnitude and out-of-plane electrically-induced spin accumulation at the edges of an etched channel, providing evidence for the extrinsic spin Hall effect. Unlike in previous studies of CISP and the spin Hall eff...