The premier made the statement following her three-day visit to the two countries. She said Tajikistan is a new market for Thailand and is a gateway to Central Asia and the Middle East.
She said Tajikistan has always supported Thailand’s stance, in particular regarding the insurgency problem in Thailand's Muslim-predominant deep South.
Ms Yingluck said she has invited Tajikistani leader to visit Thailand, while more talks between the two governments are needed to find ways to reduce trade and investment barriers.
She added that flight services between the two countries will also be operated following more discussion on logistics.
Regarding Pakistan, Ms Yingluck said her visit was aimed to reinforce amicable relations with Pakistan's newly-elected government and build a strong economic partnership which can lead to a free trade agreement.
The Thai premier said the two countries agreed to double trade volume within the next five years and set up a joint business council, as well as push forward a Thai-Pakistan Free Trade Agreement (FTA).
During her visit, the Thai and Pakistani premiers witnessed the signing of three memoranda of understanding (MoUs) on visa exemptions for diplomats, and setting up both a Joint Trade Committee and a Joint Business Council.
Deputy Permanent-Secretary for Defence Gen Nipat Thonglek said Ms Yingluck, in her capacity as defence minister, discussed security issues with her Pakistani counterpart.
Gen Nipat said Thailand's Southern Border Provinces Administration Centre has invited the Pakistani business sector to invest in the kingdom's southern border provinces, especially in the Halal food industry, in order to create jobs in the region.
Ms Yingluck is scheduled to return to Bangkok this evening.