v3.25.4
Form N-1A Cover
Feb. 04, 2026
Prospectus [Line Items]  
Document Type 485BPOS
Amendment Flag false
Registrant Name Themes ETF Trust
Entity Central Index Key 0001976322
Entity Investment Company Type N-1A
Document Period End Date Feb. 04, 2026
Prospectus Date Feb. 04, 2026