I don't know if it's a one-off thing due to the collision of the Miasmal/Sanctuary in Blasphemy tours or what, but Martyrdöd is coming to the US and will be playing the Black Lodge in Seattle on June 17 with No Statik, Walls, Slowmotions (JPN), Crazy Spirit and my own dumb band Criminal Code. Should be pretty awesome.
Danish postpunk teens Iceage will be touring extensively over the next few months and here's a few of the dates I've seen confirmed, most of which will be supporting Fucked Up:
05/05 - tba, London
05/06 - White Rabbit, Plymouth
05/07 - Clwb lfor Bach (matinee show), Cardiff
05/07 - Croft, Bristol
05/08 - Institute, Birmingham
05/09 - The Well, Leeds
05/10 - Caberet Volataire, Edinburgh
05/11 - The Cluny, Newcastle
06/17 - NYC
06/18 - NYC (instore)
06/19 - Philly
06/20 - Baltimore (tbc)
06/22 - Boston
06/23 - NYC
I've heard they'll be doing a full US tour with Total Abuse, so expect dates for that to be announced soon.
Danish electro/rock act Veto will be heading to the UK for a couple dates in late May/early June:
05/31 - Barfly, London
06/03 - KOKO (Club NME), London
Danish rockers On Trial will be calling it quits after 25+ years with a final show at Loppen in CPH on June 3. They'll also be doing one final release, a 2x7" on featuring four tunes, two from an aborted album session and two that will end up being the band's final statement. Said release will be packaged in a gatefold hand-screened sleeve and will be limited to a one-time-only pressing of 500 copies.
Norway's The New Wine are currently on tour in Europe and blogging as they go: https://thenewwine.tumblr.com/
Marybell Katastrophy and The Malpractice will be doing a couple German dates together in May:
05/17 - Astra-Stube, Hamburg
05/18 - Schokoladen, Berlin
Ja Ja Ja has confirmed their April showcase for the 28th and it will feature Hymns from Nineveh, Feldberg and Zebra & Snake as selected by The Line of Best Fit: https://www.jajajamusic.com/news.php?id=62
Swedish metal hype Ghost will be making their NYC debut on June 1 at Webster Hall.
Gaffa reports that ' big 10-year anniversary/closing party at Loppen in Christiania on April 15 will feature Jomi Masasge, Won't Lovers Revolt Now, Shout Wellington Air Force and Pinkunoizu with various label associates DJing: https://gaffa.dk/nyhed/48270
Obstacles are working on a new 12" EP for release via in the next couple months. Four songs supposedly showcasing "a new side" of the band, whatever that means. They're also heading over to Russia in mid-April for a string of dates:
04/14 - Squat Café, Moscow
04/15 - tba Moscow
04/17 - V-Club, Saint Petersburg
New Japanese dates for Maia Hirasawa:
05/20 - Akasaka BLITZ, Tokyo
05/23 - IMS Hall, Fukuoka
05/24 - Club Quattro, Nagoya
05/25 - Club Quattro, Osaka
06/04 - TAICO CLUB, Nagano (solo)
More details: https://www.maiahirasawa.com/japan/
Umeå pop-punks Epidemics have been added to our May 28 Clubnight! Be there!
Swedish hardcore act Glöm Dä! is going on tour in mid-April and here are the preliminary dates: https://glomda.wordpress.com/2011/03/07/tour%c2%b4s-coming-up/
Björn Kleinhenz reports that his new album "Djago Bråk", which I do believe is his planned acoustic album, is just about done and will be released in May. Just in time for tour, too -- he'll be setting out to Germany once again, this time with Karin Wiberg on violin and Jonathan Larsson on accordion as accompaniment. Dates:
04/30 - Hasenschaukel, Hamburg
05/01 - Brause, Duesseldorf
05/02 - King Georg, Cologne
05/03 - Walhalla Spiegelsaal
05/04 - Kino Maxim, Munich
05/05 - Thalia Kino, Dresden
05/06 - Grüner Salon, Berlin
05/07 - AMP, Münster
The Berlin show will be a special one too, because Björn will be playing with Pink Moth and they'll have a new split CD/download for the show featuring one song each "based on notes made during our travels together in the spring of 2010." More details and maybe even some samples soon...
Swedish act Days will be playing NYC Popfest in late May: https://www.nycpopfest.org/line-up.html
As for SF Popfest which happens around the same time, I don't see any Scandinavians confirmed (yet), but they do have quite a few big names such as The Undertones.