Coco Gauff and Karolina Muchova face each other in the first of the women's semi-finals on Centre Court on Thursday.
Marta Kostyuk takes on Linda Noskova in the second match on Centre.
The mixed doubles final also takes place, with second seeds Marcelo Arevalo and Jelena Ostapenko up against Australian duo Marc Polmans and Storm Hunter.
Elsewhere, Britain's Henry Patten is second up on Court One, partnering Harri Heliovaara in the men's double semi-finals.
That match will be followed by Alfie Hewett and Gordon Reid's men's wheelchair doubles semi-final.