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We show that the hyperluminous source HLX--1 may be a stellar--mass binarysystem like SS433, but seen along its X--ray beams. The precession of thesebeams gives the $\sim 1$~yr characteristic timescale of the light curve, whilethe significant X--ray duty cycle means that the precession angle must becomparable with the beam opening angle, which is of order $1.6^{\circ}$. TheX--ray light curve appears to result from geometric collimation and scatteringas the beam moves through the line of sight. Encouragingly, the distance $\sim95$~Mpc suggested for HLX--1 is only a few times larger than the minimumdistance at which we can expect to view such a highly--beamed system along itsaxis. This picture allows a simple interpretation of HLX--1 as the most extremeknown member of the ULX population.

HLX-1 may be an SS433 system