The other two countries were Switzerland and the Czech Republic.
The advice against non-essential travel was earlier this summer lifted for Belgium, France, Greece, Iceland, Italy, Croatia, Monaco, Luxembourg, Portugal, San Marino, Spain, Switzerland, Hungary and the Vatican.
In mid-July Andorra, Germany and Poland were added to the list but the warning was reinstated for Switzerland.
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The ministry's recommendations against non-essential travel to other countries in the EU, EEA and Schengen area, as well as the UK, were on Wednesday extended until August 12th.
For countries outside the EU, recommendations against non-essential trips remain in place until August 31st.
The foreign ministry's advice against non-essential travel is not a legally binding ban, but has other implications, for example that your travel insurance may not be valid if you disregard the advice.
The guidance has been in place since an early stage in the pandemic, due to global uncertainty and travel bans, so it relates to restrictions in place for travellers rather than being based on the spread of infection in the countries.
It's important to remember that individual countries may also have their own rules about entry from Sweden, and that these may change quickly.
Denmark and Norway for example both only allow entry for tourism purposes from certain Swedish regions based on the local infection rate.