Nepeta grandiflora is a species of flowering plant in the mint family Lamiaceae, native to the Caucasus. Growing to 75 cm (30 in) tall by 30 cm (12 in), it is a clump-forming, erect deciduous herbaceous perennial with aromatic, slightly hairy, grey-green leaves, and spikes of purple/blue flowers in early summer.

N. grandiflora and its cultivars are widely grown as ornamental garden plants which are useful for the middle of a flower border in full sun. The cultivar 'Bramdean' has gained the Royal Horticultural Society's Award of Garden Merit.

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