To provide an ethylenic resin for a thermoforming sheet excellent in balance of flexibility, thermal deformation resistance and transparency.

The ethylenic resin for the thermoforming sheet satisfies all of the following conditions: (a) a density of 890-930 kg/m3; (b) a melt flow rate (MFR) of 0.1-10 g/10 min; (c) an energy of activation for fluidity (Ea) of <50 kJ/mol; (d) Mz/Mw ≥3.5; (e) (Mz/Mw)/(Mw/Mn)≥0.9; (f) a quantitative proportion of eluted resin at ≥100°C, measured by temperature rising elution fractionation, of <1 wt.% (provided that the weight of the ethylenic resin is considered to be 100 wt.%); and (g) a melt tension at 150°C of 4-30 cN.

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