About Our Dojo
Dojo Events
Schedule & Fees
Dojo Location
About Aikido & Links
About Iaido
Photos & Videos
Aikido & Iaido Glossary
Aikido for Children


Practicing Non-Violence is a Way of Life.

Welcome to our website.

Two Rivers Aikikai is a non-profit organization dedicated to providing adults and children with the opportunity to develop strong, healthy bodies and powerful spirits through the practice of Aikido and Iaido in Portland, Oregon. Two Rivers Aikikai admits students ages 6 and above of any race, color, gender identity and sexual orientation.
Aikido is a life changing martial art with the ultimate goal of convincing humanity that violence is not an effective means of improving society. The cooperative practice of Aikido can help you develop a centered, balanced and sensitive human character. Iaido is being in the moment and thus a moving meditative practice of drawing and cutting with a Japanese Sword.

As you browse through our site, please take the time to think of questions you might want to ask us about Aikido and Iaido and what they may offer you. Feel free to visit our dojo in real life to observe classes and get a personal sense of the friendly atmosphere on the mat and the vibrant spirit of our students and instructors.

Thinking of starting Aikido or Iaido in Portland?

Register for one of our 4 week Beginner Sessions.

Click here for dates and registration information of our next Beginner Session.

Kanai Sensei - photo by Jessica Boyatt.

Our Aikido and Iaido lineage

The Chief Instructor of Two Rivers Aikikai is Spiros Koyanis, 6th dan Shidoin, who trained under the late Mitsunari Kanai, 8th dan Shihan from 1983 until Kanai Sensei's passing in March, 2004. Instructor Lynn Marshall, 4th dan, Shidoin also trained extensively under the late Mitsunari Kanai, Shihan. Thus the dojo's Aikido style is primarily influenced by Kanai Sensei's teaching of Aikido and his theory of the unified body. Our style pays close attention to "ma-ai" both before and after an Aikido technique allowing for the effectiveness of non-violence as self defense. You can find more information on our instructors on the About our Dojo page.

In Iaido, our instructors teach Muso Shinden Ryu style under the guidance of Claude Berthiaume Sensei. Our dojo is a member of Kiyoikaze Iaido Federation whose purpose is to develop and guide the instruction of Iaido as established by Mitsunari Kanai Sensei and carried on by Technical Director, Claude Berthiaume Shihan. More information on our Iaido program is available on our About Iaido page.

Seminars & Workshops

Please Join Us!

Please mark your calendars for our

Spring Aikido and Iaido Seminar with Claude Berthiaume Shihan

at Two Rivers Aikikai in early May 2018

Exact dates and details will be posted soon.

USAF Announcements:

When asked for advice by his students on a wide variety of topics, Kanai Sensei often told us, "Just keep training." And so, we do.

Check out USAF Aikido

The on-line newsletter of the USAF has articles and pictures from a variety of USAF seminars. Laura Jacobs Pavlick, Chief Instructor of Litchfield Hills Aikikai and Secretary of the USAF does a fantastic job as Editor. She also prints out and mails all of our USAF kyu certificates. Thanks Laura.

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General website information:

Links to Aikido Resources are located on our About Aikido & Links page.
In addition to photos and videos in our photo gallery, visit our Dojo Events page for photos and videos from our seminars.

E-mail Two Rivers Aikikai:

Home | About Two Rivers | Events | Schedule | Location | About Aikido
About Iaido | Photo Gallery | Glossary | Aikido for Children

Two Rivers Aikikai is a 501(c)(3) federal non-profit organization that admits students of any race, color, age, gender identity, and sexual orientation to all the rights, privileges, programs and activities that are available to all members.