Tuatha Dé Danann, [49] f., [60], [61], [63] f., [66], [92] f., [146], [158], [168], [173].

Tutelar divinities, [40], [45], [73].

Tuag, [87].

Twrch Trwyth, [108], [119], [211].

Tyr, [84].

Underworld, [60], [102], [112], [341].

Urien, [101].

Urwisg, [189].

Uthyr, [101], [120], [122].

Valkyries, [72].