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Recent observations have shown that circumstellar and circumbinary discs inyoung stellar binaries are often misaligned with respect to the binary orbitalplane. We analyze the tidal truncation of such misaligned discs due to torquesapplied to the disc at the Lindblad resonances from the tidal forcings of thebinary. We consider eccentric binaries with arbitrary binary-disc inclinationangles. We determine the dependence of the tidal forcing strengths on thebinary parameters and show that they are complicated non-monotonic functions ofeccentricity and inclination. We adopt a truncation criterion determined by thebalance between resonant torque and viscous torque, and use it to calculate theouter radii of circumstellar discs and the inner radii of circumbinary discs.Misaligned circumstellar discs have systematically larger outer radii thanaligned discs, and are likely to fill their Roche lobes if inclined by morethan $45^\circ - 90^\circ$, depending on the binary mass ratio and discviscosity parameter. Misaligned circumbinary discs generally have smaller innerradii than aligned discs, but the details depend sensitively on the binary anddisc parameters.

Tidal Truncation of Inclined Circumstellar and Circumbinary Discs in Young Stellar Binaries