Plantago obconica is a species of flowering plant in the family Plantaginaceae that is endemic to the South Island of New Zealand.

Plants of this species of plantain are perennial with a rosette habit, with very narrow, linear, keeled leaves, and fruiting capsules with a 1-cm long funnel-like base.

[1] The holotype was collected by Anthony Druce in 1983 at Mount Somers, Canterbury in the South Island of New Zealand (CHR 389736).

[3][4] The specific epithet refers to the inverted cone or funnel shape of the capsule, which is a distinguishing feature for this species.

[5] Plantago obconica is a plantain that is endemic to the South Island of New Zealand, in Marlborough, Canterbury and Otago.

[6] Similarly, Plantago obconica closely related to P. lanigera, P. novae-zelandiae and P. aucklandica in a phylogenetic study of the New Zealand species using amplified fragment length polymorphisms (AFLPs).

[8][9] Plantago obconica is listed as At Risk - Naturally Uncommon in the most recent assessment (2017-2018) of the New Zealand Threatened Classification for plants.