In addition to the above answers:
TL;DR:
Demonstrations, regardless of size, have been seen in:
- Damascus, Syria
- Nicosia, Cyprus
- Sydney, Australia
- Kazan, Republic of Tatarstan (a semi-autonomous region) - so, still Russia I guess...
- Ethiopia
- Bamako, Mali
- New Delhi, India
- Bethlehem, West Bank
- Tel-Aviv, Israel
- Netanya, Israel
- Niksic, Montenegro
- Larnaca, Cyprus
- Sana'a, Yemen
- Bishkek, Kyrgyzstan
(Note: a few are from social media rather than a news article, as searching for more information pro-russian returns fewer results..)
https://youtu.be/Ifnf12uO76U
PRO-RUSSIAN demonstration has taken place at Damascus university in Syria, as students parade around in Russian military 'Z' formation.
Syrian university students and professors held a pro-Russia demonstration in Damascus on March 9, Russian and Syrian state media reported.
Related:
https://www.independent.co.uk/tv/news/prorussia-z-damascus-university-demonst
Pro-Russia students form giant ‘Z’ during Damascus University demonstration
Syrian students and professors formed a giant 'Z' during a pro-Russia demonstration at Damascus University.
Dozens of people were filmed waving Russian flags at the university march before crowds formed the shape of a Z.
https://cyprus-mail.com/2022/03/12/pro-putin-protest-outside-nicosia-embassy/
Pro-Putin protest outside Nicosia embassy
March 12, 2022
A small group of people gathered outside the Russian embassy on Saturday in support of the country’s invasion of Ukraine and President Vladimir Putin.
A few dozen people waving Russian flags stood outside the Russian embassy in Nicosia, using the motto “Putin Great Leader”.
https://www.dailyadvent.com/gb/news/ccd0665a5affd4ebebfbf68b1efafcdb-ProRussian-protesters-bring-their-war-to
https://www.dailymail.co.uk/news/article-10596797/Pro-Russia-protesters-Putin
Pro-Russian protesters bring their war to Sydney as they march outside Russia's consulate in SUPPORT of the horrific invasion of Ukraine
- Loyalists took to the streets outside Russia's Sydney embassy to back invasion
- Sydney-based supporters repeatedly shown support there over past two weeks
- Dozens stood outside Woollahra consulate on Wednesday holding Russian flags
https://www.ladbible.com/news/russian-students-wearing-z-symbol-hold-pro-war-
Russian Students Dressed In White Gowns Emblazoned With 'Z' Symbol Host Eerie Pro-War Rally
Russian students wearing white jackets emblazoned with a black 'Z' symbol have staged a pro-war rally at a Kazan university.
In footage released on social media, the students in the patriotic flash mob can be seen chanting while saluting and raising their fists to the sky.
The group descended on a Kazan shopping centre before chanting 'Russia for peace' and 'forward Russia'.
However it has since been revealed that students were threatened with expulsion if they did not attend.
German journalist Julian Roepcke initially reported that students could only get out of the mandatory demonstration with 'an explanatory note'.
https://www.nytimes.com/2022/03/03/world/africa/russia-ukraine-eritrea-africa.html
In Ethiopia, Russian flags flew at a ceremony on Wednesday to commemorate a famous 19th century battle against Italian invaders, recalling the involvement of Russian volunteers who sided with Ethiopian fighters.
Bamako, Mali:
https://www.ghsplash.com/pro-russia-protest-in-mali-in-support-amidst-russia-ukraine-conflict/
Pro-Russia protest happened in Mali amidst the Russia Ukraine conflict.
(Note: t-shirts with “Je Suis Wagner” on them)
https://www.dw.com/en/who-are-the-indians-supporting-russias-invasion-of-ukraine/a
In New Delhi earlier this month, members of Hindu Sena, an Indian right-wing organisation, organized a demonstration in support of Russia and its invasion of Ukraine.
Marching in the heart of the capital for almost an hour, the demonstrators held signs reading "Russia, you fight, we are with you" and "Long live India-Russia ties." Other signs explicitly supported the invasion and an "undivided Russia."
https://www.timesofisrael.com/liveblog_entry/palestinians-in-bethlehem-hold-small-rally-in-support-of-russia/
Palestinians in Bethlehem hold small rally in support of Russia
..small pro-Russia rally in Bethlehem in the West Bank.
Both the Palestinian Authority and Hamas, the two main Palestinian factions, have avoided taking a stance on Russia’s invasion of Ukraine.
But historic ties bind other Palestinians with Moscow. Many studied in the former Soviet Union, which also provided aid and comfort for years to the Palestine Liberation Organization.
(Rough translation: Bethlehem donated by President Abu Ali Putin)
https://scooptrade.com/residents-of-tel-aviv-organized-a-rally-in-support-of-russia/
Tel-Aviv and Netanya, Israel
https://youtu.be/ 4A-3K-SmYc4
https://oopstop.com/rally-in-support-of-russia-takes-place-in-israel/
“Today, two rallies were announced in Netanya: “For the Russian world” and “against the Russian world”. According to the organizers, they will be held from 12.00 to 17.00,” the news agency reports. The Israeli Labor Weekdays Telegram channel clarifies that the Israeli police forces are aimed at ensuring that the participants in the rally “For the Russian World” and “against the Russian World” do not meet.
Also on the website of the news agency it is reported that a motor rally in support of Russia took place in Tel Aviv. A video with the convoy has already been published. She is reportedly moving towards holding a pro-Russian rally.
Just checking it was held in Tel-Aviv.. on HaYarkon Street.
https://www.reuters.com/world/europe/serb-nationalists-montenegro-rally-support-russia-2022-02-28/
Niksic, Montenegro
Orthodox nationalists pose with the banner that reads "Serbs in Montenegro - Russians in Ukraine" in solidarity with their "Russian brothers", who they support in their ongoing invasion of Ukraine, in Niksic, Montenegro.
https://www.urdupoint.com/en/world/around-300-people-gather-for-pro-russian-rall-1488272.html
A rally in support of Russia, organized by the Coordination Council of Russian Compatriots in Cyprus and local activists, took place in the Cypriot city of Larnaca on Saturday.
https://www.gettyimages.no/detail/news-photo/yemenis-participate-in-a-protest-staged-for-supp
Yemenis participate in a protest staged for supporting Russian President Vladimir Vladimirovich Putin in his war on Ukraine, outside the Russian embassy
https://eurasianet.org/ukraine-war-inspires-rival-passions-in-central-asia
https://24.kg/obschestvo/226465_situatsiya_vukraine_vbishkeke_prohodit_miting_vpodderjku_rossii/
“For eight years, the inhabitants of Donbass have been waiting for the end of Nazi actions by the Ukrainian authorities, all this time they have endured, but there is no point in being silent. We must rise up and come out against Nazism. Our grandfathers went through this already. Today we came out to express our gratitude to the guys who defend peace on the whole planet, Kyrgyzstan is with you,”