Lithuania's industrial producer prices in the domestic market fell by 2.8% in August year-on-year, compared with the EU's average rate of decline of 1.6%.
Producer prices dropped by 2.7% in Latvia and were down by 3.9% in Estonia.
Month-on-month, producer prices edged down by 0.5% in Lithuania, rose by 0.9% in Latvia and held steady in Estonia.
Across the EU, the index fell by a monthly 0.2%.