The 29-year-old is relishing the showdown with Blaugrana later this month while Thomas Muller and Manuel Neuer also tweet their excitement about the game
Bayern progressed to the last four after an emphatic 4-0 aggregate win over Juventus, while the Blaugrana snuck through on away goals against Paris Saint-Germain.
The 29-year-old took to his twitter page to voice his opinion on the draw, which also pitted Borussia Dortmund against Real Madrid.
“It’s a great draw. What a game! It’s our third semi-final appearance in four years and we meet Barcelona eye to eye. I think our chances of reaching Wembley are 50/50. It will be an interesting duel between two top teams.”
Meanwhile Lahm’s team-mates for club and country, Thomas Muller and Manuel Neuer, also expressed their views on the clash between two of Europe’s heavyweights.
Muller tweeted: “I’ve never played against Barcelona so I’m really looking forward to it,” while Neuer called it “a real cracker of a tie”.
The first leg will take place on April 23 at Allianz Arena, with the return fixture at Camp Nou on May 1.