The Constitution currently allows any Lithuanian citizen aged 25 years and over to run for a seat in the Seimas.
Viktorija Cmilyte-Nielsen, the leader of the Liberal Movement's political group in the Seimas, says young people become increasingly involved in politics, but are underrepresented in the parliament.
"We have one MP aged under 29 years. Topics that are important to young people often do not get proper attention in the Seimas," Cmilyte-Nielsen said at a news conference on Friday.
"We are not suggesting changing this norm by the next election. We understand that this requires broad discussion," she said. "We believe that the time has come to discuss this and we see plenty of arguments for it."
The minimum age of candidacy is currently set at 18 years in 16 EU member states, the Liberal MP noted.
Terese Skutaite, the chairwoman of the Lithuanian Liberal Youth organization, says statistics show an increase in young people's political physical activity levels.
"A mere 18 percent of people aged between 18 and 29 years cast their votes in the 2012 Seimas election and that number increased to around 38 percent in the 2016 Seimas election," she said.
According to Skutaite, this signals "an upward trend", but steps must be taken to "keep those numbers growing".
A constitutional amendment must be voted on twice by the Seimas, with an interval of at least three months between the votes, and requires a two-thirds majority, or 94 votes, to be adopted.